Electrophilic substitution of aniline with bromine in aqueous medium gives:

The product $(B)$ in the given reaction is:

Products $A$ and $B$ formed in the following reactions are respectively:
$p$-aminobenzenesulfonic acid + $HNO_2$ $\longrightarrow$ $A$ $\xrightarrow{C_6H_5NH_2}$ $B$

Which of the following reacts with $CHCl_3$ and $KOH$ to produce $RNC$?

Which of the following amines does $NOT$ form an alkyl isocyanide when heated with alcoholic $KOH$ and chloroform $(CHCl_3)$?

The product $(C)$ of the following reaction is: