. An object of mass 2 kg is moving with a velocity of 3 m/s and collides head on with an object B of mass 1 kg moving in the opposite direction with a v

An object of mass 2 kg is moving with a velocity of 3 m/s and collides head on with an object B of mass 1 kg moving in the opposite direction with a velocity of 4 m/s. After collision, both objects coalesce so that they move with a common velocity n equal to

(A) 0.66

(B) 1 m/s

(C) 2 m/s

(D) 3 m/s