Identify A to D in figures given bwlow showing digrammatic presentation of various events during a menstrual cycle:
A. A-Progesterone, B-Estrogen, C-Menstruation, D-Luteal phase
B. A-Androgen, B-Progesterone, C-Menstruation, D-Luteal phase
C. A-Estrogen, B-Progesterone, C-Luteal phase, D-Menstruation
D. A-Estrogen, B-Progesterone, C-Menstruation, D-Luteal phase