Notwithstanding the provisions of N.C. Gen. Stat. § 14-17, a defendant who is convicted of first degree murder, and who was under the age of 18 at the time of the offense, shall be sentenced in accordance with this Part. For the purposes of this Part, “life imprisonment with parole” shall mean that the defendant shall serve a minimum of 25 years imprisonment prior to becoming eligible for parole. (2012-148, s. 1.)