What is/are true regarding nitration and sulphonation of benzene?
A. Nitration of `C_(6)H_(6)` occur at slightly faster rate than that of `C_(6)D_(6)`
B. Sulphonation of `C_(6)H_(6)` occur at slightly faster rate than that of `C_(6)D_(6)`
C. Addition of concentrated sulphuric acid catalyze nitration of benzene in presence of concentrated nitric acid
D. Nitration of benzene is easier than sulphonation.
