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': 'A 50 year old woman nulliparous. diabetic and obese presenting with post-menopausal bleeding can be any of the following except : \nSelect and explain. \nA. Carcinoma in situ of cervix, B. Carcinoma endometrium, C. DUB, D. None of the above', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Carcinoma in situ of cervix', 'role': 'assistant'}]