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': 'In the flowchart shown below regarding pathophysiology of polycystic ovarian syndrome, A is \nSelect and explain. \nA. Inhibin - B, B. Oestrogen, C. Progesterone, D. Androstenedione', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Elevated Estrone causes endometrial hyperplasia.', 'role': 'assistant'}]