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 postmenopausal diabetic woman presents with bleeding per vaginum. The most likely diagnosis is : \nSelect and explain. \nA. Carcinoma vulva, B. Carcinoma cervix, C. Carcinoma endometrium, D. Carcinoma ovary', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Carcinoma endometrium', 'role': 'assistant'}]