Replacement of Cl of chlorobenzene to give phenol requires drastic conditions but chlorine of 2,4-dinitrochlorobenzene is readily replaced because
A. `NO_(2)` make ring electron rich at ortho and para
B. `NO_(2)` withdrawn `e^(-)` from metal position
C. `-NO_(2)` donates `e^(-)` at meta position
D. `NO_(2)` withdraws `e^(-)` from ortho/para position
