The answer is option A.
The gonads of the male and female body are regulated by Folicle-stimulating hormone (FSH) and Luteinizing (LH) from the pituitary glandule. In males, FSH stimulates production
of sperm cells while in females it stimulates the growth of the ovum. And LH, in males, stimulates the Leydig cells in order to produce testosterone, and in females, stimulates
hormones preparing the body for pregnancy, as well as playing an important role in ovulation.