Assertion (A): The Clapeyron equation enables us to determine the enthalpy change associated with phase change
Reason (R): Using usual notations, the Clapeyron equation is given by $\left ( \frac{dT}{dP} \right )_{sat} = \frac{h_{fg}}{Tv_{fg}}$
a) Both A and R are individually true and R is the correct explanation of A
b) Both A and R are individually true but R is not the correct explanation of A
c) A is true but R is false
d) A is false but R is true