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
Auditory fatigue occurs at 
Select and explain. 
A. 50dB, B. 60 dB, C. 80 dB, D. 90 dB
D: 90 dB
Answer: D: 90 dB 
Explanation: Ans. is 'd' i.e., 90 dB