Modern turbines have velocity compounding at the initial stages and pressure compounding

Question

 Assertion (A): modern turbines have velocity compounding at the initial stages and pressure compounding in subsequent stages.                                        

Reason (R): Excessive tip leakage occurs in the high pressure region of reaction balding.

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