A Sample of Gas Is Heated from 200 K to 400

Multiple Choice

A sample of gas is heated from 200 K to 400 K. Which of the following statements accurately describes the sample at its new conditions?
1) The average velocity is twice as fast.
2) The molecules have four times the kinetic energy.
3) The average velocity is nearly the same.
4) The average kinetic energy is half the original.
5) The kinetic energy is twice the original.

A) 1 and 5 only
B) 3, 4 and 5 only
C) 2 and 5 only
D) 3 and 5only
E) 5 only