Assertion (A): The rivers of the West Coast of India do not form the delta.Reason (R): They flow through short courses on relatively harder rocks.Choose the correct option using the codes given below:

• A. Both (A) and (R) are correct and (R) is the correct explanation of (A)
• B. Both (A) and (R) are correct but, (R) is the not correct explanation of (A)
• C. (A) is true but (R) is not false
• D. (A) is false but (R) is correct