An organic compound [A], molecular formula ${\mathrm{C}}_{10}{\mathrm{H}}_{20}{\mathrm{O}}_2$ was hydrolyzed with dilute sulphuric acid to given a carboxylic acid [B] and an alcohol [C]. Oxidation of [C] with ${\mathrm{CrO}}_3-{\mathrm{H}}_2{\mathrm{SO}}_4$ produced [B]. Which of the following structures are not possible for $\left[\mathrm{A}\right]$