In the figure shown, the two identical balls of mass \( M \) and radius \( R \) each, are placed...

In the figure shown, the two identical balls of mass \( M \) and radius \( R \) each, are placed in contact with each other on the frictionless horizontal surface. The third ball of mass \( M \) and radius \( R / 2 \), is coming down vertically and has a velocity \( =v_{0} \) when it simultaneously hits the two balls and itself comes to rest. Then, each of the two bigger balls will move after collision with a speed equal to
(1) \( 4 v_{0} / \sqrt{5} \)
(2) \( 2 v_{0} / \sqrt{5} \)
(3) \( v_{0} / \sqrt{5} \)