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': 'Most common frequency of Tuning fork used in ENT \nSelect and explain. \nA. 256 Hz, B. 512 Hz, C. 1024 Hz, D. 2048 Hz', 'role': 'user'}, {'content': "Answer: B \nExplanation: Tuning fork test can be performed using tuning fork of different frequencies such as:\n. • MC used/ ideal for routine clinical practice is of 512 Hz.\n• Tuning fork of lower frequencies produce sense of bone vibration while those of higher frequencies have a shorter decay time and are thus not routinely preferred.\n• Tests done with tuning fork:\n■ Rinne’s test\n■ Weber's test\n■ Absolute bone conduction (ABC) test\n■ Bing test\n■ Gelle’s test\n■ Lewis test", 'role': 'assistant'}]