Assertion (A) : Mahanadi is called as the lifeline of Chhattisgarh.
Reason (R) : It is the only river in the entire state.

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 correct explanation of A.

C. A is true, but R is false.

D. A is false, but R is true.

Answer: Option C