A Sample of Argon Gas (Molar Mass 40 G) Is

A sample of argon gas (molar mass 40 g) is at four times the absolute temperature of a sample of hydrogen gas (molar mass 2 g) . The ratio of the rms speed of the argon molecules to that of the hydrogen is:

A) 1
B) 5
C) 1/5
D)
E)