A bullet of '4g' mass is fired from a gun of mass 4 kg. If the bullet moves with the muzzle speed of 50ms⁻¹ , the impulse imparted to the gun and velocity of recoil of gun are :
A. 0.4kg ms⁻¹,0.1ms⁻¹
B. 0.2kg ms⁻¹,0.05ms⁻¹
C. 0.2kg ms⁻¹,0.1ms⁻¹
D. 0.4kg ms⁻¹,0.05ms⁻¹