The Pennsylvania Commission on Sentencing shall provide for a sentencing enhancement for arson offenses if any of the following factors are present:
(1) bodily injury results to a firefighter, police officer or other person actively engaged in fighting the fire;
(2) serious bodily injury results to a civilian;
(3) more than three people were present inside the property at the time of the offense;
(4) the fire caused more than $1,000,000 in property damage; or
(5) the actor used, attempted to use or possessed an explosive or incendiary device as defined in 18 Pa.C.S. § 5515(a) (relating to prohibiting of paramilitary training).