Arrange the following gases in decreasing order of the speed of sound through them at the same temperature:
Hydrogen (M=2), Nitrogen (M=28), Oxygen (M=32), Argon (M=40).
a) Hydrogen > Argon > Nitrogen > Oxygen
b) Hydrogen > Nitrogen > Oxygen > Argon
c) Nitrogen > Hydrogen > Oxygen > Argon
d) Hydrogen > Oxygen > Nitrogen > Argon