This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Tumour of Nasopharynx, Subject name: ENT
[{'content': 'Treatment of choice for angiofibroma: \nSelect and explain. \nA. Surgery, B. Radiotherapy, C. Both, D. Chemotherapy', 'role': 'user'}, {'content': 'Answer: A \nExplanation: (a) Surgery (best option)(Ref. Cummings, 6th ed., 1422)Radiotherapy is indicated in angiofibroma only when the tumour has intracranial extension.', 'role': 'assistant'}]