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': "Increased LH : FSH ratio is found in : \nSelect and explain. \nA. Premature menopause, B. Polycystic ovary syndrome, C. Turner's syndrome, D. Polycystic ovary syndrome", 'role': 'user'}, {'content': 'Answer: D \nExplanation: Polycystic ovary syndrome', 'role': 'assistant'}]