Which Statement A-D Below Is Not True of an Ideal

Which statement A-D below is not true of an ideal gas?

A) The size of the molecules is negligible.
B) Molecules do not interact with each other except when they collide.
C) Gas pressure is caused by collisions of the molecules with the walls of a container.
D) An ideal gas mixes completely with other gases.
E) Statements A-D all describe an ideal gas.