The marathon route goes 6 km South from the starting point. It then turns West and goes 6 kms, then turns North and goes 6 km, finally it turns left and goes 2 km to reach the end point. Where is the end point with reference to the start point?

A

4 km to the West of the starting point.

B

8 km to the West of the starting point

C

8 km to the East of the starting point.

D

4 km to the East of the starting point