Statement-1: Decrease of free energy during the process under constant temperature and pressure provides a measure of its spontaneity.
Statement -2: A spontaneous change must have +ve sign of `DeltaS_("system").`
A. Statement-1 is true, Statement-2, is true, Statement -2 is a correct explanation for statement-1
B. Statement-1 is true, Statement-2, is true, Statement -2 is not a correct explanation for statement-1
C. Statement-1 is true, Statement-2 is false
D. Statement-1 is false, Statement-2 is true