A compound X is formed by the reaction of a carboxylic acid C<sub>2</sub>H<sub>4</sub>O<sub>2</sub> and an alcohol in the presence of a few drops of H<sub>2</sub>SO<sub>4</sub>. The alcohol on oxidation with alkaline KMnO<sub>4 </sub>followed by acidification gives the same carboxylic acid as used in this reaction. Give the names and structures of <br><b>(a)</b> carboxylic acid, <br><b>(b)</b> alcohol and <br><b>(c)</b> the compound X. <br>Also, write the reaction.