Which of the following is not true about an ideal gas?
(a) The average kinetic energy of the gas molecules increases as the temperature increases.
(b) The volume of an ideal gas increases with temperature if the pressure is held constant.
(c) The pressure of an ideal gas increases with temperature if the volume is held constant.
(d) All gas molecules have the same speed at a particular temperature.
(e) The molecules are assumed to be far apart compared to their size.