A projectile is projectile with velocity `kv_(e)` in vertically upward direction from the ground into the space (`v_(e)` is escape velocity and `klt1`). If air resistance is considered to be negligible then the maximum height from the centre of earth to which it can go, will be : (`R`=raduis of earth)
A. `R/(k^(2)+1)`
B. `R/(k^(2)-1)`
C. `R/(1-k^(2))`
D. `R/(k+2)`
