Human Chorionic Gonadotropin (HCG), a Hormone Released by a Conceptus

Human chorionic gonadotropin (hCG) , a hormone released by a conceptus and the placenta, is chemically and functionally similar to luteinizing hormone (LH) . As such, hCG supports early pregnancy by

A) stimulating the corpus luteum to maintain its secretion of estrogen and progesterone.
B) stimulating the hypothalamus to secrete GnRH.
C) inhibiting the secretion of androgens.
D) causing the corpus luteum to regress, thus preventing subsequent ovulation.
E) acting upon LH receptors in the endometrium to prevent it from being shed during menstruation.