The sequence of reagents required to convert aniline to benzene nitrile is:
- A$NaNO_2 + HCl, 273-278 \ K$; $CuCN / KCN$
- B$NaNO_2 + HCl, 273-278 \ K$; $CuCN / KCN$
- C$NaNO_2 + HCl, 273-298 \ K$; $Cu / HCN$
- D$Cl_2 / Fe$; $KCN$
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