Two cars started from a particular spot. The car A ran Straight at the speed of 30 kmph for 2 hours north and then took a right turn. It run 40 km and again turned right. It stopped after east at the speed of 20 kmph for 2 hours and tuned left. it ran for 100 km and then stopped. How far were there two cars from each other when both of them stopped at last ?

A

17 km

B

18 km

C

19 km

D

20 km