A Circular Hula Hoop Rolls Upright Without Slipping on a Flat

Multiple Choice

A circular hula hoop rolls upright without slipping on a flat horizontal surface. Which one of the following statements is necessarily true?

A) All points on the rim of the hoop have the same speed.
B) All points on the rim of the hoop have the same velocity.
C) Every point on the rim of the wheel has a different velocity.
D) All points on the rim of the hoop have acceleration vectors that are tangent to the hoop.
E) All points on the rim of the hoop have acceleration vectors that point toward the center of the hoop.