The correct option is C Both A and B
The corpus luteum is a temporary endocrine structure in female mammals, that is involved in the production of relatively high levels of progesterone and moderate levels of estradiol and inhibin A. The corpus luteum is essential for establishing and maintaining pregnancy in females. The corpus luteum secretes progesterone, which is a steroid hormone responsible for the decidualization of the endometrium (its development) and maintenance, respectively.