The correct option is D a, b and c
Corpus luteum: The ovulation (ovulatory phase) is followed by the luteal phase during which the remaining parts of the Graafian follicle transform as the corpus luteum. The corpus luteum secretes large amounts of progesterone which is essential for maintenance of the endometrium.
Theca interna: In tertiary follicle, theca layer arranges into theca externa and theca interna which secrete estrogen.
Sertoli Cells: They produced inhibin which regulate spermatogenesis.