An organic reaction occurs by using reagents called electrophiles and nucleophiles via the formation of some reactive intermediates called carbocations, carbanions, free radicals, carbenes, nitrenes, radical cations, and radical anions.
Which of the following contains electrophiles only ?
A. `Br^(oplus), PH_3, H_2O`
B. `NO_2^(oplus), : CBr_2, SO_3`
C. `NH_3,H_2 O, A1 Br_3`
D. `A1C1_3, CH_2=CH_2,SO_3`