For the Assertion (A) and Reason (R) given below, choose the correct option:
Assertion (A): Crude oil is abundantly found in nature.
Reason (R): It is the main raw material for all automobiles.
(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).