A Gas in a Closed Container with Constant Volume Is $\degree$

A gas in a closed container with constant volume is heated from room temperature to 100 $\degree$ C.According to the kinetic molecular theory, the

A) average velocity of the molecules will increase.
B) gas will increase in weight.
C) individual molecules of the gas will increase their size.
D) average distance between molecules will increase.
E) pressure on the sides of the container will decrease.