What Effect Does Oral Contraception Have Upon a Woman's Body

What effect does oral contraception have upon a woman's body?

A) Oral contraception shuts down the pituitary production of both FSH and GnRH
B) Oral contraception shuts down the pituitary production of both progesterone and estrogen
C) Oral contraception shuts down the pituitary production of both FSH and LH
D) Oral contraception shuts down the pituitary production of both FSH and estrogen
E) Oral contraception shuts down the hypothalamus production of both FSH and LH