This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Pathology of Conception, Subject name: Gynaecology & Obstetrics
Commonest cause of anovulatory infertility - 
Select and explain. 
A. PCOS, B. TB, C. Endometriosis, D. Thyroiddysfunction
A: PCOS
Answer: A: PCOS 
Explanation: Ans. is 'a' i.e., PCOS Cause of female infertilityo Ovarian (3(M0%> PCOD {10%)o Tubal blockage (35-30%)o Uterine factors (10%)o Pelvic causes (5%)o Cervical causes (5%)o Unexplained infertility- (15%)