With which of the following reagents, aniline gives electrophilic substitution product ?

(3).. This is electrophilic substitution reaction. Aniline gives a white ppt of 2,4,6-tribromo aniline; Whereas1..C6H5NH-COCH3; 2...C6H5NH-CH3; 4...C6H5NH3+HSO4-;