Assertion (A): Chandragupta Maurya failed in his first campaign against Magadha. Reason (R): He did not begin with the frontiers, but invaded the heart of Magadha

• A. Both A and R is true and R is the correct explanation of A
• B. Both A and R is 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