An organic compound ${\mathrm{C}}_{10}{\mathrm{H}}_{10}\mathrm{O}\left(\mathrm{A}\right)$ which do not decolorize  bromine water, reacts with MeMgBr to form an alcohol ${\mathrm{C}}_{11}{\mathrm{H}}_{14}\mathrm{O}\left(\mathrm{B}\right)$ which on dehydration gave ${\mathrm{C}}_{11}{\mathrm{H}}_{12}\left(\mathrm{C}\right)$.  Compound(C) on ozonolysis gave a compound ${\mathrm{C}}_{10}{\mathrm{H}}_{12}{\mathrm{O}}_2\left(\mathrm{D}\right)$ which on oxidation with ${\left[\mathrm{Ag}{\left({\mathrm{NH}}_3\right)}_2\right]}^{+}$gave ${\mathrm{C}}_{11}{\mathrm{H}}_{12}{\mathrm{O}}_3\left(\mathrm{E}\right)$ E on decarboxylation gave ${\mathrm{C}}_{10}{\mathrm{H}}_{12}\mathrm{O}\left(\mathrm{F}\right)$ is one of the isomers formed by Friedel Craft acetylation of ethyl benzene