Which of the following is not a correct statement concerning the Friedel-Crafts alkylation of benzene? The alkyl cation is often produced from an alkyl chloride. An alkyl group substitutes for a hydrogen. Isomerization of alkyl group of the electrophile may often happen. The reaction is a convenient way to prepare derivatives of benzene functionalized with linear alkyl group The reaction requires using Lewis acid as a catalyst. The benzene ring nucleophilically attacks an alkyl cation. Using the resonance theory, estimate an approximate charge on the indicated carbon. +1+0.5+0.33+0.2 0