Assertion(A): The micelle formed by sodiumm stearate in water has -COO groups at the surface.
Reason(R): Surface tension of water is reduced by addition of stearate.
A. Both A and R and true and R is the correct expalantion of A
B. Both A and R are true but R is not a correct explanation of A
C. A is true but R is false
D. A is false but R is true