Among the following four compounds <br>(A)Phenol <br> (B)Methylphenol <br>(C)meta−nitrophenol <br> (D)Para−nitrophenol <br> the acidity order is

Question

$\begin{array}{1 1} (a) D > C > A > B \\ (b) C > D > A > B \\ (c) A > D > C > B \\ (d) B > A > C > D \end{array}$