Three particles each of mass m are located at the vertices of an equilateral triangle ABC. They start moving with equal speeds  each along the medians of the triangle and collide at its centroid G. If after collision, A comes to rest and B retraces its path along GB, then C (A) also comes

Options

A. also comes to rest
B. moves with a speed v along CG
C. moves with a speed v along BG
D. moves with a speed along AG

Answer

C