Conversion of benzene diazonium chloride to chlorobenzene is an example of which of the following reactions?

Aromatic diazonium salts on reaction with cuprous chloride give aryl chlorides, on reaction with cuprous bromide give aryl bromides and on reaction with cuprous cyanide give aryl cyanides. These reactions are known as Sandmeyers reactions. ArN+2Cl⁻ + CuCl → ArCl + N₂ Option C is correct.