A 40-Kg Boy Is Standing on the Edge of a Stationary

Multiple Choice

A 40-kg boy is standing on the edge of a stationary 30-kg platform that is free to rotate.The boy tries to walk around the platform in a counterclockwise direction.As he does:

A) the platform doesn't rotate.
B) the platform rotates in a clockwise direction just fast enough so that the boy remains stationary relative to the ground.
C) the platform rotates in a clockwise direction while the boy goes around in a counterclockwise direction relative to the ground.
D) both go around with equal angular velocities but in opposite directions.