Rajesh drives 4 km towards west from point A and takes right turn and drives 8 km. He again takes right turn and drives 8 km. He again takes one more right turn and drives 4 km. Finally, he takes a right turn and drives 4 km to reach point B. How far and towards which direction should he drive in order to reach point A again?

A

3 km towards north

B

2 km towards east

C

4 km towards south

D

4 km towards west