Statement-1: A gas from a flask is allowed to effuse through a pinhole, rate of effuison decreases lineary with time.
Statement-2: With time, gas pressure in flask decreases.
A. Statement-I is True, Statement-II is True : Statement-II is a correct explanation for Statement-I
B. Statement-I is True, Statement-II is True : Statement-II is `NOT` a correct explanation for Statement-I
C. Statement-I is True, Statement-II is False.
D. Statement-I is False, Statement-II is True.