`"phenol" overset(conc.H_(2)SO_(4))rarrA overset(conc.HNO_(3))rarrB` Here A and B are respectively.
A. P_Hydroxy benzenesulphonic acid, P-nitrophenol
B. 4-Hydroxybezene-1,3-disulphonic acid, picric acid
C. 4-Hydroxybenzene-1, 3-disulphonic acid, 2, 4-dinitrophenol
D. 3-Hydroxybenzene sulphonic acid, picric acid