Which statements are correct about degrees of freedom?
A. A molecule with n degrees of freedom has n² different ways of storing energy.
B. Each degree of freedom is associated with 1/2RT average energy per mole.
C. A monoatomic gas molecule has 1 rotational degree of freedom where as diatomic molecule has 2 rotational degrees of freedom.
D. CH₄ has a total of 6 degrees of freedom

A B and C only
B B and D only
C A and B only
D C and D only