Question

Ramdin started from his office and walked 15 km in the

south direction and reached the bus stop, and then turned to his left and walked 8 km straight on the road. From there, he turned to his left, walked 15 km and reached the Central Library. After this, he turned to his left again and walked 4 km to reach his hostel. How far and in which direction is the hostel with respect to his office?

A 12 km towards North

B 7 km towards South

C 4 km towards West

D 4 km towards East