This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anti-Neoplastic Agents, Subject name: Pharmacology
[{'content': 'Topical mitomycin C is used in the treatment of: \nSelect and explain. \nA. Basal skull cancer, B. Trachea] stenosis, C. Skull base osteomyelitis, D. Angiofibroma', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. b. Tracheal stenosis "Topical Mitomycin C is the drug of choice used to aid the treatment of laryngeal stenosis. Topical Mitomycin C can inhibit fibroblast activity and restenosis."', 'role': 'assistant'}]