Identify compounds A and E in the following r | vedclass

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(B) The reaction sequence is as follows:$1$. Electrophilic aromatic substitution of $1$-ethyl-$4$-nitrobenzene with $Br_2/AlBr_3$ gives $2$-bromo-$1$-

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(B) The reaction sequence is as follows:$1$. Electrophilic aromatic substitution of $1$-ethyl-$4$-nitrobenzene with $Br_2/AlBr_3$ gives $2$-bromo-$1$-ethyl-$4$-nitrobenzene as compound $A$.$2$. Reduction of the nitro group in $A$ using $Sn/HCl$ yields $2$-bromo-$4$-ethylaniline as compound $B$.$3$. Diazotization of $B$ with $NaNO_2/HCl$ at $273-278 \ K$ gives the corresponding diazonium salt, compound $C$.$4$. Deamination of the diazonium salt $C$ using $C_2H_5OH$ removes the $-N_2^+Cl^-$ group, resulting in $2$-bromo-$1$-ethylbenzene as compound $D$.$5$. Oxidation of the ethyl group in $D$ using $KMnO_4/KOH$ followed by acidic workup $(H_3O^+)$ converts the ethyl group into a carboxylic acid group, yielding $2$-bromobenzoic acid as compound $E$.

Identify compounds $A$ and $E$ in the following reaction sequence.

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