A thief is spotted by a policeman from a distance of 100 m. When the policeman starts the chase, the thief also starts running. If the speed of the thief is 8 km/h and that of the policeman is 10 km/h, how far will the thief have run before he is overtaken?

A

250 m

B

400 m

C

350 m

D

300 m