an unknown alkene was treated with mcpba in dichloromethane, followed by work-up with h2o/h . a racemic mixture of the compound shown below was obtained. what is correct name of the starting alkene? A. (Z)-3-Methylpent-2-ene B. (E)-3-Methylpent-2-ene C. 2-Methylpent-2-ene D. 2,3-Dimethylbut-2-ene E. none of the above