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
The decibels above which auditory fatigue occurs is: 
Select and explain. 
A. 60 dB, B. 70 dB, C. 85 dB, D. 140 dB
C: 85 dB
Answer: C: 85 dB 
Explanation: 85 dB