Assertion (A): The first - law efficiency evaluates the energy quantity utilisation where as the second – law efficiency evaluates the energy quality utilization
Reason (R): The second – law efficiency for a process is defined as the ratio of change of available energy of the source to the change of available energy of the system
(a) Both A and R are true and R is the correct explanation of A
(b) Both A and R are 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