Which statements are correct about degrees of freedom ?

(A) A molecule with n degrees of freedom has n$^{2}$ different ways of storing energy.

(B) Each degree of freedom is associated with $\frac{1}{2}$ RT average energy per mole.

(C) A monatomic gas molecule has 1 rotational degree of freedom where as diatomic molecule has 2 rotational degrees of freedom.

(D) $\mathrm{CH}_{4}$ has a total of 6 degrees of freedom.

Choose the correct answer from the options given below :

1. A (B) and (C) only
2. B (B) and (D) only Correct answer
3. C (A) and (B) only
4. D (C) and (D) only