Assertion: On a rainy day, it is difficult to drive a car or bus at high speed.
Reason: The value of coefficient of friction is lowered due to wetting of the surface.
A. If both A and R are true, and R is a correct explanation of the A
B. If both A and R are true, but R is not a correct explanation of the A
C. If A is true, but R is false
D. If both A and R are false
