A Block Slides Down a Frictionless Inclined Plane

Multiple Choice

A block slides down a frictionless inclined plane. The block is held in place on the plane until the platform on which the plane rests is given an acceleration to the right. The block is then released. During the time the platform is accelerated

A) the velocity of the block changes with time.
B) the block may accelerate up the incline.
C) the normal force on the block changes with time.
D) the normal force on the block is less than the weight of the block.