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': 'Topical mitomycin C is used to aid the following treatment - \nSelect and explain. \nA. Endoscopic treatment of angiofibroma, B. Treatment of laryngotracheal stenosis, C. Skull base osteomyelitis, D. Sturge weber syndrome', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]