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': 'Treatment of cholesteatoma with facial paresis in child is - \nSelect and explain. \nA. Antibiotics to dry ear and then mastoidectomy, B. Immediate mastoidectomy, C. Observation, D. Only antibiotic ear drops', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]