There are two different schemes you could use to synthesize 4-ethyl-3-heptanol using a Grignard reagent and carbonyl-containing compound. Suppose scheme one involves the reaction of the Grignard reagent containing more carbon atoms with the carbonyl compound containing less carbon atoms and scheme two involves the reaction of the Grignard reagent containing less carbon atoms with the carbonyl compound containing more carbon atoms. (a) Draw the Grignard reagent from scheme one (b) Draw the carbonyl-containing compound from scheme one.