A thief is spotted by a policeman from a distance of 250m. When the policeman starts the chase, the thief also starts running. Assuming that the speed of the thief is 10 km/h and that of the policeman is 12 km/h, how far would the thief have run before he is caught?

A

4 km

B

1.25 km

C

3 km

D

2 km