Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R :
Assertion A : FSH acts upon ovarian follicles in female and Leydig cells in male .
Reason R : Growing ovarian follicles secrete estrogen in female while interstitial cells secrete androgen in male human being .
In the light of the above statements , choose the correct answer from the options given below :