. Two solid rubber balls A and B having masses 200 and 400 gm respectively are moving in opposite direction with velocity of A equal to 5.3 m/sec. After

Two solid rubber balls A and B having masses 200 and 400 gm respectively are moving in opposite direction with velocity of A equal to 5.3 m/sec. After collision, the two balls come to rest when the velocity of B is:

(A) 0.15 m/sec

(B) 1.5 m/sec