A bomb of mass 1 kg is thrown vertically upwards with a speed of `100 m//s` .After 5 seconds it explodes into two fragments .One fragment of mass 400 g is found to go down with a speed of 25 m//s .the second fragment just after the explosion will go `(g=10 m//s^2)`.

Options

A. It will go upward with speed of `100 m s^(-1)`
B. It will go upward with speed of `40 m s^(-1)`
C. It will go upward with speed of `60 m s^(-1)`
D. It will go downward with speed of `40 m s^(-1)`