This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Gynaecology & Obstetrics
A patient with amenorrhea had bleeding after giving a trial of progesterone. This implies : 
Select and explain. 
A. Sufficient estrogen, B. Intact pituitary axis, C. Normal ovarian function and Intact endometrium both, D. All
D: All
Answer: D: All 
Explanation: Ans. is a, b and c i.e. Sufficient estrogen; Normal ovarian function; Intact endometrium; and Intact pituitary axis Note : Friends it is quite difficult to understand the above cha in one go, you will have to go through it 3 - 4 times to understand it well. Also revise the various compaments of menstruation from Q.No. 3 for better and complete understanding.