Comprehension Passage
Directions: Study the following information carefully and answer the question based on it.
There are 5 friends A, B, C, D and E standing randomly. B is to the northeast of E. D is 2 km to the east of E, who is 6 km to the west of A. C is to the northwest of D and in the line of EB. D is 4 km to the south of B.What is the shortest distance between B and A?
1
5√7 km
2
4√2 km
3
6√2 km
4
3√5 km
5
None of these