Assertion (A): A catalyst increase the rate of a reaction. Reason (R): In presence of a catalyst, the activation energy of the reaction increases.

Question

The correct answer is :

(a) Both (A) and (R) are true  and (R) is the correct explanation of (A)

(b) Both (A) and (R) are true  but  (R) is not the correct explanation of (A)

(c)  (A) is true, but (R) is not true

(d) (A) is not true, but (R) is true