(A) : Two particles (starting from rest) move towards each other under a mutual force of attraction. The velocity of their c.m is zero.
(R ) : Internal forces do not alter the state of motion of c.m.

Options

A. Both 'A' and 'R' and true and 'R' is the correct explantation of 'A'
B. Both 'A' and 'R' and true and 'R' is not the correct explantation of 'A'
C. A' is true and 'R' is false
D. A' is false and 'R' is true

Answer

A