Which Isn't a Postulate of the Kinetic Molecular Theory

Multiple Choice

Which isn't a postulate of the kinetic molecular theory?

A) The mass of a molecule is negligibly small.
B) The volume of a molecule is a negligibly small fraction of the volume of the container.
C) The number of molecules in a gas is very large.
D) The molecules are in a state of constant, random motion.
E) The attractive forces between molecules are negligibly small.