A stone is dropped from the top of tower. When it has fallen by `5 m` from the top, another stone is dropped from a point `25m` below the top. If both stones reach the ground at the moment, then height of the tower from grounds is : (take `g=10 m//s^(2)`)
A. `45 m`
B. `50 m`
C. `60 m`
D. `65 m`