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
During normal conversation, sound heard at 1 meter distance is: 
Select and explain. 
A. 80dB, B. 60dB, C. 90dB, D. 120dB
B: 60dB
Answer: B: 60dB 
Explanation: Whisper 30 Db Normal conversation 60 Db Shout 90 Db Discomfo of the ear 120 Db Pain in the ear 130 dB