Two persons A and B, stand at the same point. A walks 11 km East, takes a right turn and walks 6 km and turns left and walks 2 km. B walks 3 km towards West; turns right and walks 7 km; turns right again and walks 16 km. How far is A from B?
1
12 km
2
10 km
3
13 km
4
15 km