Aniline undergoes diazotisation with NaNO₂ and HCl at 273–278 K.
The resulting diazonium salt is subsequently treated with cuprous chloride (Cu₂Cl₂).
Identify the major organic product (Y).

1. Chlorobenzene

2. Benzene

3. 1,3-Dichlorobenzene

4. 1,4-Dichlorobenzene