Two paper screens A and B are separated by 150m. A bullet pierces A and B. The hole in B in 15 cm below the hole in A. If the bullet is travelling horizontally at the time of hitting A, then the velocity of the bullet at A is: `(g=10ms^(-2))`
A. `100 sqrt(3) m s^-1`
B. `200 sqrt(3) m s^-1`
C. `300 sqrt(3) m s^-1`
D. `500 sqrt(3) m s^-1`