10. Consider the concept of classical ideal gas. Which one of the following statements is wrong?
(A) The number of molecules in the gas is large, but the occupied volume of all molecules is negligible.
(B) Except for the short-range forces during elastic collisions, there is no interaction between molecules.
(C) All molecules are assumed identical.
(D) The molecules make elastic collisions with the walls of the container.
(E) The temperature of the gas is directly proportional to the average velocity of molecules.