This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Polycystic Ovarian Syndrome, Subject name: Gynaecology & Obstetrics
[{'content': 'Which of the following is not used in polycystic ovarian syndrome (PCOS)? \nSelect and explain. \nA. OC pills, B. Cyclical progesterones, C. Letrozole, D. Danazol', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Management of PCOS Irregular periods/Amenorrhea Rx Combined OC pills Progesterone only pills ( For 10 days - from 14th day/ mid cycle) Hirsutism Rx Anti Androgens OC pills containing progesterones with anti androgenic action Cosmetic Rx for hair : prevents depression. Infeility Rx Ovulation induction ( clomiphene, letrozole) Weight reduction Insulin sensitizers Metformin Inj Recombinant FSH Inj Gonadotropin', 'role': 'assistant'}]