Assertion (A) The development of hydroelectric power in the state has taken place in the southern and south-eastern regions. Reason (b) This region has sufficient water in rivers, slope gradient and facilities for building dams. Select the correct answer with reference to the above statements:

• A. Both A, B are correct and B is the correct explanation of A.
• B. A, B both are correct and B is not the correct explanation of A
• C. both a and b are wrong
• D. A is wrong while B is right.