This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Infeility (Eggs'plantation!), Subject name: Gynaecology & Obstetrics
Decreasing AMH (anti-mullerian hormone) is a sign of- 
Select and explain. 
A. Disruption of ovarian-hypothalamic-pituitary axis, B. Test of ovulation, C. Increased androgen production from ovaries, D. Decreased ovarian reserve
D: Decreased ovarian reserve
Answer: D: Decreased ovarian reserve 
Explanation: Antimullerian hormone (AMH) expression inhibits development of the female reproductive tract in the male embryo also secreted by granulosa cells of preantral and small antral follicles in women regulates folliculogenesis by inhibiting recruitment of follicles from resting pool in order to select a dominant follicle levels decrease with declining ovarian reserve. AMH is mostly used as a reliable marker of ovarian reserve.