Which of the following compounds are arranged in order of decreasing reactivity towards electrophilic substitution
A. p-chlrochlorbenzene `gt` o-chlorotoluene `gt` p-nitrochlorobezene
B. p-nitrochlorobenzene `gt` o-chlorotoluene `gt` p-chlorotoulene
C. p-chlorotoulene `gt` p-nitrochlorobenznen `gt` o-chlorotoluene
D. o-chlorotoluene `gt` p-chlorotolene `gt` p-nitrochlorobenzne