In gas turbines, regenerative heating always improves

Question

Direction: Each of the next consists of two statements, one labeled as the ‘Assertion (A)’ and the other as carefully and select the answers to these item using the codes given below:

Codes:

1. Both A and R are individually true and R is the correct explanation of A
2. Bothe A and R are individually true but R is not the correct explanation of A
3. A is true but R is false
4. A is false but R is true               

Assertion (A): In gas turbines, regenerative heating always improves the efficiency unlike that in the case of reheating.            

Reason (R): Regenerative heating is isentropic.