Chemistry Question from JEE Main 2026 · 22 January, Shift 1

$A$ is a neutral organic compound (M.F.: $C_8H_9ON$). On treatment with aqueous $Br_2/HO^-$, $A$ forms a compound $B$ which is soluble in dilute acid. $B$ on treatment with aqueous $NaNO_2/HCl$ ($0\text{--}5^\circ \text{C}$) produces a compound $C$ which on treatment with $CuCN/NaCN$ produces $D$. Hydrolysis of $D$ produces $E$ which is also obtainable from the hydrolysis of $A$. $E$ on treatment with acidified $KMnO_4$ produces $F$. $F$ contains two different types of hydrogen atoms. The structure of $A$ is