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': 'A 13 year old boy presents with swelling in the cheek with recurrent epistaxis. Most likely cause is - \nSelect and explain. \nA. Angiofibroma, B. Ca Nasopharynx, C. Rhabdomyosarcoma, D. None', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]