Which Isn't One of the Postulates of the Kinetic Molecular

Multiple Choice

Which isn't one of the postulates of the kinetic molecular theory?

A) At a constant temperature, all of the particles have the same speed.
B) Gas particles are in constant motion.
C) Gas particles move in a straight line between collisions.
D) The volume of the particles is negligibly small compared to the volume of the container.
E) There are no forces of attraction between gas particles.