A body is thrown vertically upward from a point 'A' 125 m above the ground .It goes up to a maximum height of 250 m above the ground and passes through 'A' on its downward journey .The velocity of the body when it is at a height of 70 m above the ground is `(g=10ms^(-2))`

Options

A. `50ms^(-1)`
B. `60ms^(-1)`
C. `80 ms^(-1)`
D. `20ms^(-1)`

Answer

B