The maximum range of a bullet fired from a toy pistol mounted on a car at rest is `R_(0)=40m`. What will be the acute angle of inclination of the pistol for maximum range when the car is moving in the direction of firing with uniform velocity `V=20m//s`, on a horizontal surface? `(g=10m//s^(2))`
A. `30^(@)`
B. `60^(@)`
C. `75^(@)`
D. `45^(@)`