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 choice in deafness associcated with attico antral perforation- \nSelect and explain. \nA. Simple mastoidectomy, B. Modified radical mastoidectomy, C. Watch and wait, D. Instillation of antibiotic drops', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]