A body of mass $\mathrm{m}_{1}$ is moving with a velocity $\mathrm{v}$. It collides with another stationary body of mass $\mathrm{m}_{1}$. They get embedded. At the point of collision, the velocity of the system
(A) Increases
(B) Decreases but does not become zero
(C) Remains same
(D) Become zero