Which of the Following Statements Regarding Gas Particle Speed Is

Which of the following statements regarding gas particle speed is NOT correct?

A) Gas particles have a distribution of speeds at a given temperature.
B) The largest number of gas particles travel at the most probable speed.
C) More massive gas particles have lower root-mean-square speeds than lighter particles at a given temperature.
D) Individual gas particles have different kinetic energies at a given temperature.
E) A particle traveling at the average speed has a kinetic energy equal to the average kinetic energy of all the gas particles.