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': 'Polycystic ovarian disease is associated with : \nSelect and explain. \nA. Ovarian cancer, B. Endometrial carcinoma, C. Congenital adrenal hyperplasia, D. Vaginal carcinoma', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Endometrial carcinoma', 'role': 'assistant'}]