Match each of the compounds is Column I with its characteristic...

(A) (\mathrm{CH}}_{3} \mathrm{CH}}_{2} \mathrm{CH}}_{2}\mathrm{CN}$) (Butanenitrile) is a nitrile that can be reduced. It matches with (\mathrm{p}, \mathrm{q}), and s (reduction methods) and can also undergo t (hydrolysis to a carboxylic acid). (B) (\mathrm{CH}$}_{3} \mathrm{CH}}_{2} \mathrm{OCOCH}}_{3}) (Ethyl acetate) is an ester. It can undergo ($\mathrm{t}$) (alkaline hydrolysis) and can be reduced by ($\mathrm{s}$) (DIBAL-H) and other reducing agents like those in ($\mathrm{p}$). (C) (\mathrm{CH}}_{3} \mathrm{CH}=\mathrm{CHCH}}_{2} $\mathrm{OH}$) (Crotyl alcohol) is an alcohol with a double bond. The double bond can be reduced by (\mathrm{p}\left(\mathrm{P d - C}/ \mathrm{H}}_{2}\right)). (D) (\mathrm{CH}}_{3} \mathrm{CH}}_{2} \mathrm{CH}}_{2} \mathrm{CH}}_{2} \mathrm{NH}}_{2}) (Butanamine) is a primary amine. It gives a foul smell in the carbylamine reaction with chloroform and alcoholic KOH, which is reaction r. The correct option is (2).