(a) For purposes of historical preservation or public health, safety, or welfare, a commissioners court may use public funds, county employees, county inmate labor as provided by Article 43.10, Code of Criminal Procedure, and county equipment to maintain a cemetery that is at least 50 years old.
(b) This section does not apply to a perpetual care cemetery or a cemetery maintained by a religious or fraternal organization.

(c) At the discretion of the commissioners court, a county may permit the use of public funds, county employees, county inmate labor as provided by Article 43.10, Code of Criminal Procedure, and county equipment to open and close graves in a cemetery described by Subsection (a).