Read the following statements - Assertion (A) and Reason (R): Assertion (A) Total product increases at decreasing rate then increases at increasing rate and then falls. Reason(R) Marginal product increases then decreases then turns negative. From the given alternatives choose the correct one:

a) Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A). b) Both Assertion (A) and Reason (R) are true and Reason (R) is not the correct explanation of Assertion (A). c) Assertion (A) is true but Reason (R) is false. d) Assertion (A) is false but Reason (R) is true.

d) Assertion (A) is false but Reason (R) is true.