Compounds Containing Nitrogen

In a set of reactions nitrobenzene gave a product \(C\). Identify the product \(C\).

\(\mathrm{C}_6 \mathrm{H}_5 \mathrm{NO}_2 \xrightarrow{\mathrm{Fe} / \mathrm{HCl}} A \xrightarrow[273 \mathrm{~K}]{\mathrm{NaNO}_2 / \mathrm{HCl}} B \xrightarrow[\Delta]{\mathrm{H}_2 \mathrm{O} / \mathrm{H}^{+}} C\)