Assertion: o-nitrophenol is more acidic than p-nitrophenol.
Reason: Nitro group has +M and –I effect.
(A) If both assertion and reason true and reason is the correct explanation of assertion, then mark (A)
(B) If both assertion and reason are true but reason is not the correct explanation of assertion, then mark (B)
(C) If assertion is true but reason is false, then mark (C)
(D) If both assertion and reason false, then mark (D)