The kinetic molecular theory of gases predicts pressure to increase as the temperature of a gas increases because:
I. the average kinetic energy of the gas molecules increases.
II. gas molecules collide more frequently with the container walls.
III. there are more molecules per unit volume after raising the temperature.
IV. the elasticity of the molecules increases.
V. there are less molecules per unit volume after raising the temperature.

a. I and II
b. I and III
c. II and III
d. III and IV
e.II and V