The correct statement(s) of the following is/are (A) Aniline forms a stable benzene diazonium chloride at 285 K . (B) N - phenylethanamide is less reactive towards nitration than aniline. (C) $p-\mathrm{CH}_3 \mathrm{C}_6 \mathrm{H}_4 \mathrm{COCl}$ is Hinsberg reagent.

$$ \text { Identify what is } Y \text { in the following reaction sequence? } $$

Conversion of $A$ to $B$ is an example of the reaction