Consider the following four compounds I, II, III and IV. NH NH H3C-CH3 ON. N I Choose the correct statement(s). NO NO H3C-CH3 ON. NO IV NO (A) The order of basicity is II > I > III > IV. (B) The magnitude of pK, difference between I and II is more than that between III and IV. (C) Resonance effect is more in III than in IV. (D) Steric effect makes compound IV more basic than III.