Which Set of Gases Is Listed from Lowest to Highest $\degree$

Which set of gases is listed from lowest to highest root-mean-square speed at 25 $\degree$ C?

A) Ne $\lt$ NO $\lt$ Ar $\lt$ CH₄
B) Ar $\lt$ CH₄ $\lt$ NO $\lt$ Ne
C) CH₄ $\lt$ NO $\lt$ Ar $\lt$ Ne
D) Ar $\lt$ NO $\lt$ Ne $\lt$ CH₄
E) CH₄ $\lt$ Ne $\lt$ NO $\lt$ Ar