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
[{'content': 'Most common endocrine disorder of reproductive aged women is \nSelect and explain. \nA. Hypothyroidism, B. Polycystic ovarian syndrome, C. Type-2 Diabetes mellitus, D. Congenital adrenal hyperplasia', 'role': 'user'}, {'content': 'Answer: B \nExplanation: PCOD is most common endocrine disorder in reproductive age woman.', 'role': 'assistant'}]