An Object of Mass 3m, Initially at Rest, Explodes Breaking

Multiple Choice

An object of mass 3m, initially at rest, explodes breaking into two fragments of mass m and 2m, respectively. Which one of the following statements concerning the fragments after the explosion is true?

A) They will fly off at right angles.
B) They will fly off in the same direction.
C) The smaller fragment will have twice the speed of the larger fragment.
D) The larger fragment will have twice the speed of the smaller fragment.
E) The smaller fragment will have four times the speed of the larger fragment.