What is the meaning of silence zone for noise pollution?

Q. What is the meaning of silence zone for noise pollution?

A.            Area comprising more than 100 meters around hospitals and educational institutes

B.            Area comprising not less than 100 meters around hospitals and educational institutes

C.            Area comprising more than 100 meters around clubs and commercial streets

D.            Area comprising not less than 100 meters around clubs and commercial streets

Answer: Area comprising not less than 100 meters around hospitals and educational institutes