Assertion (A): The average annual growth rate of population is normally less than the exponential growth rate.
Reason (R): Population does not grow by constant increment of people. In the context of the above statement, which one of the following is correct?

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 a correct explanation of A

C. A is true but R is false

D. A is false but R is true

Answer: Option C