At 100 degrees celsius, the ratio of the average kinetic energy of oxygen molecules, O2, to the average kinetic energy of methane molecules, CH4, is:

Question

A) 4:1
B) 1:4
C) 1:2
D) 1:1

I think it's D because the kelvin temperature is the same for both collection of gases, and under the Kinetic Molecular Theory, the avg. KE of a gas is directly proportional to its kelvin temperature. Is that right?