Manoj is facing west direction and starts to walk 7m from point A towards his left. He takes a right turn and walks 5m then takes a left tum and walks 8m to reach point B. Vikas starts from the same point A and walks 6m towards the east direction. He takes a right turn and walks 10m. Now takes a left turn and walks 9m to reach point C then takes a right tum and walks 4m to reach point D.
What is the shortest distance between point B and point D ?

Options

A. 21m
B. `sqrt(401)m`
C. `8sqrt(7) m`
D. `7m`

Answer

B

Explanation