A loaded gun of mass M fires a bullet of mass m with a velocity v at an angle of elevation `theta`. The gun is initially at rest on a horizontal frictionless surface. After, the centre of mass of the gun-bullet system

Options

A. Moves witha velocity `fracv(M - m))(M + m)` n the horizontal direction
B. Moves with velocity `frac(mvcostheta)((M + m))`
C. `Moves with a velocity `v(frac(m)(M + m))`
D. `Moves with a velocity `(frac(mvsintheta)(M + m))`