From point O, facing west, a person walks 4 km to reach point A, then from there, after walking 4 km to the right reaches point B, then after walking 4 km to the right he reaches point C, turning right, he walks 3 km to reach point D, turning left, he walks 4 km to reach point E, walking 5 km to the right reaches point F, the shortest distance between point B and point F is:

From point O, facing west, a person walks 4 km to reach point A, then

1.	From point O, facing west, a person walks 4 km to reach point A, then from there, after walking 4 km to the right reaches point B, then after walking 4 km to the right he reaches point C, turning right, he walks 3 km to reach point D, turning left, he walks 4 km to reach point E, walking 5 km to the right reaches point F, the shortest distance between point B and point F is:
A.	8√2
B.	5√2
C.	4√2
D.	3√2
Answer» B. 5√2

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