For pressure ratio greater than the critical pressure ratio, a convergent-divergent nozzle is

Question

 Assertion (A): For pressure ratio greater than the critical pressure ratio, a convergent-divergent nozzle is required

Reason (R): Divergent portion increases the flow area which increases the mass flow rate

1. Both A and R are individually true and R is the correct explanation of A
2. Both 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