In the following sequence of reactions, $\mathrm{CH}_3-\mathrm{Br} \stackrel{\mathrm{KCN}}{\longrightarrow}…
In the following sequence of reactions,
$\mathrm{CH}_3-\mathrm{Br} \stackrel{\mathrm{KCN}}{\longrightarrow} A \stackrel{\mathrm{H}_3 \mathrm{O}^{+}}{\longrightarrow} B \xrightarrow[\mathrm{LiAlH}_4]{\text { ether }} C$
the end product $(C)$ is