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: Social & Preventive Medicine
[{'content': 'Auditory fatigue occurs at ? \nSelect and explain. \nA. 50 dB, B. 60 dB, C. 80 dB, D. 90 dB', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., 90 dB Auditory effects of noice A uditoryfatigue- 90 dB and 4000 Hz. Deafness Temporary - 4000 to 6000 Hz Repeated prolonged exposure to 100 dB Permanent Single exposure to 160 dB (due to rupture of ear drum)", 'role': 'assistant'}]