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': 'Juvenile angiofibroma confined to nasal cavity, preferred approach for surgery ? \nSelect and explain. \nA. Transnasal endoscopic, B. Transpalatal, C. Lateral rhinotomy, D. Transmaxillary', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is'a'i.e., Transnasal endoscopic(Ref: Clinical otolaryngology p. 911)", 'role': 'assistant'}]