This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Diagnostic & Operative ENT, Subject name: ENT
[{'content': "Which of the following is the best tuning fork to do Rinne's and Weber s tests \nSelect and explain. \nA. 128 Hz, B. 256 Hz, C. 512 Hz, D. 1024 Hz", 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. (c) 512 HzRef: Dhingra's ENT 6th ed./22, 5th ed. / 26", 'role': 'assistant'}]