Assertion (A): In human being, the females play a major role in determining the sex of the offspring.
Reason (R): Women have two 'X' chromosomes.

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 the correct explanation of (A)

C. (A) is true, but (R) is false

D. (A) is false, but (R) is true

Answer: Option D