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: ENT
[{'content': 'Epistaxis in elderly patient is commonest in- \nSelect and explain. \nA. Nasapharyngeal carcinoma, B. Foreign body, C. Bleeding disorder, D. Hypertension', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]