This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Operative Surgery, Subject name: ENT
[{'content': 'Surgery on ear drum is done using: \nSelect and explain. \nA. Operative microscope, B. Laser, C. Direct vision, D. Blindly', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans: a (Operative microscope)Ref: Still searching', 'role': 'assistant'}]