Sec. 2. (a) A person may not be charged with an offense under this subsection if the person may be charged with an offense described in subsection (c). A person who knowingly or intentionally possesses a firearm:
(1) in or on school property; or
(2) on a school bus;
commits a Level 6 felony.
(b) It is a defense to a prosecution under subsection (a) that:
(1) the person is permitted to legally possess the firearm; and
(2) the firearm is:
(A) locked in the trunk of the person's motor vehicle;
(B) kept in the glove compartment of the person's locked motor vehicle; or
(C) stored out of plain sight in the person's locked motor vehicle.
(c) A person who is permitted to legally possess a firearm and who knowingly, intentionally, or recklessly leaves the firearm in plain view in a motor vehicle that is parked in a school parking lot commits a Class A misdemeanor.