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 47 year old woman complains of postcoital bleeding, nearly as heavy as menses. The most likely origin of her bleeding would be cervical : \nSelect and explain. \nA. Polyps, B. Ectrooion, C. Carcinoma, D. Nabothian cysts', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Carcinoma', 'role': 'assistant'}]