JEE Main Physics question

A body of mass 3 kg is moving with a velocity of 4 ms⁻¹ towards the right, and collides head-on with a body of mass 4 kg moving in the opposite direction with a velocity of 3 ms⁻¹. After collision the two bodies stick together and move with a common velocity, which is

• (A)ZeroCorrect
• (B)12 ms⁻¹ towards left
• (C)12 ms⁻¹ towards right
• (D) ms⁻¹ towards left