A policeman sees a chain snatcher at a distance of 500 m. He starts chasing the chain snatcher who is running at a speed of 5 m/s, while the policeman is chasing him at a speed of 15 m/s. Find the distance covered by the chain snatcher, when he is caught by the policeman.

A

150 m

B

180 m

C

250 m

D

200 m