d
\(A.\) Alkaline solution of copper sulphate and sodium citrate is known as Benedict's solution and it is used to test aliphatic aldehydes. Hence it can be used to test compound \((III)\)

\(B.\) Neutral \(FeCl _3\) solution is used to test phenolic compound \((IV)\)

\(C.\) Alkaline chloroform solution is used to test  primary amines \((II)\)

\(D.\) \(2 KI + NaOCl + H _2 O \rightarrow NaCl + I _2+2 KOH\)

Potassium iodide and sodium hypochlorite gives \(\left( I _2+ KOH \right)\) which is used to test those compounds which have \(image\) group (iodoform test). Hence the compound is \(image\)