(1)    Any person who does any of the following may be penalized as provided in sub. (1c):

      (a)    Causes the death of another by the operation or handling of a vehicle while under the influence of an intoxicant.

      (am)    Causes the death of another by the operation or handling of a vehicle while the person has a detectable amount of a restricted controlled substance in his or her blood.

      (b)    Causes the death of another by the operation or handling of a vehicle while the person has a prohibited alcohol concentration, as defined in s. 340.01 (46m).

      (bm)    Causes the death of another by the operation of a commercial motor vehicle while the person has an alcohol concentration of 0.04 or more but less than 0.08.

      (c)    Causes the death of an unborn child by the operation or handling of a vehicle while under the influence of an intoxicant.

      (cm)    Causes the death of an unborn child by the operation or handling of a vehicle while the person has a detectable amount of a restricted controlled substance in his or her blood.

      (d)    Causes the death of an unborn child by the operation or handling of a vehicle while the person has a prohibited alcohol concentration, as defined in s. 340.01 (46m).

      (e)    Causes the death of an unborn child by the operation of a commercial motor vehicle while the person has an alcohol concentration of 0.04 or more but less than 0.08.

   (1c)   

      (a)    Except as provided in par. (b), a person who violates sub. (1) is guilty of a Class D felony. Upon conviction, the court shall impose a bifurcated sentence under s. 973.01 and the term of confinement in prison portion of the bifurcated sentence shall be at least 5 years except that a court may impose a term of confinement that is less than 5 years if the court finds a compelling reason and places its reason on the record.

      (b)    A person who violates sub. (1) is guilty of a Class C felony if the person has one or more prior convictions, suspensions, or revocations, as counted under s. 343.307 (2). Upon conviction, the court shall impose a bifurcated sentence under s. 973.01 and the term of confinement in prison portion of the bifurcated sentence shall be at least 5 years except that a court may impose a term of confinement that is less than 5 years if the court finds a compelling reason and places its reason on the record.

   (1d)   A person who violates sub. (1) is subject to the requirements and procedures for installation of an ignition interlock device under s. 343.301.

   (1g)   Any person who does any of the following is guilty of a Class D felony:

      (a)    Causes the death of another by the operation or handling of a firearm or airgun while under the influence of an intoxicant.

      (am)    Causes the death of another by the operation or handling of a firearm or airgun while the person has a detectable amount of a restricted controlled substance in his or her blood.

      (b)    Causes the death of another by the operation or handling of a firearm or airgun while the person has an alcohol concentration of 0.08 or more.

      (c)    Causes the death of an unborn child by the operation or handling of a firearm or airgun while under the influence of an intoxicant.

      (cm)    Causes the death of an unborn child by the operation or handling of a firearm or airgun while the person has a detectable amount of a restricted controlled substance in his or her blood.

      (d)    Causes the death of an unborn child by the operation or handling of a firearm or airgun while the person has an alcohol concentration of 0.08 or more.

   (1m)   

      (a)    A person may be charged with and a prosecutor may proceed upon an information based upon a violation of any combination of sub. (1) (a), (am), or (b); any combination of sub. (1) (a), (am), or (bm); any combination of sub. (1) (c), (cm), or (d); any combination of sub. (1) (c), (cm), or (e); any combination of sub. (1g) (a), (am), or (b); or any combination of sub. (1g) (c), (cm), or (d) for acts arising out of the same incident or occurrence.

      (b)    If a person is charged in an information with any of the combinations of crimes referred to in par. (a), the crimes shall be joined under s. 971.12. If the person is found guilty of more than one of the crimes so charged for acts arising out of the same incident or occurrence, there shall be a single conviction for purposes of sentencing and for purposes of counting convictions under s. 23.33 (13) (b) 2. and 3., under s. 23.335 (23) (c) 2. and 3., under s. 30.80 (6) (a) 2. and 3., under s. 343.307 (1) or under s. 350.11 (3) (a) 2. and 3. Subsection (1) (a), (am), (b), (bm), (c), (cm), (d), and (e) each require proof of a fact for conviction which the others do not require, and sub. (1g) (a), (am), (b), (c), (cm), and (d) each require proof of a fact for conviction which the others do not require.

   (2)   

      (a)    In any action under this section, the defendant has a defense if he or she proves by a preponderance of the evidence that the death would have occurred even if he or she had been exercising due care and he or she had not been under the influence of an intoxicant, did not have a detectable amount of a restricted controlled substance in his or her blood, or did not have an alcohol concentration described under sub. (1) (b), (bm), (d) or (e) or (1g) (b) or (d).

      (b)    In any action under sub. (1) (am) or (cm) or (1g) (am) or (cm) that is based on the defendant allegedly having a detectable amount of methamphetamine or gamma-hydroxybutyric acid or delta-9-tetrahydrocannabinol in his or her blood, the defendant has a defense if he or she proves by a preponderance of the evidence that at the time of the incident or occurrence he or she had a valid prescription for methamphetamine or one of its metabolic precursors or gamma-hydroxybutyric acid or delta-9-tetrahydrocannabinol.

   (3)   An officer who makes an arrest for a violation of this section shall make a report as required under s. 23.33 (4t), 23.335 (12) (j), 30.686, 346.635 or 350.106.