This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Disorders of Middle Ear (Otitis Media), Subject name: ENT
[{'content': 'Cholesteatoma is seen in: \nSelect and explain. \nA. ASOM, B. CSOM, C. Secretory Otitis media, D. Otosclerosis', 'role': 'user'}, {'content': 'Answer: B \nExplanation: (b) CSOM(Ref. Cummings, 6th ed., 2141)Cholesteatoma formation is characteristic of unsafe CSOM.The other mentioned options are not associated with cholesteatoma.', 'role': 'assistant'}]