Which of the following zones are correctly matched with their permitted noise level?

Q. Which of the following zones are correctly matched with their permitted noise level?

 1) Industrial ——— 90 dB

2) Commercial —– 75 dB

3) Residential ——- Silence Zone

4) Courts ————- 55 dB

A.            Only 1 and 2

B.            Only 2 and 3

C.            Only 3

D.            None of the above

Answer: None of the above