QUESTION 20 (4 points) A ketone (L.) reacts with a Grignard reagent (A) to give the alcohol shown as the major product after workup. A different ketone (M) reacts with a different Grignard reagent (B) to give the same alcohol as the major product after workup. Both A and B are derived from iodo compounds. Draw the lower molecular weight of the two compounds, L or M, in the box on the left. Draw the lower molecular weight reagent, A or B, in the box on the right. QUESTION 21 (3 points) Draw the most important contributing (resonance) structure of the cationic intermediate formed the in electrophilic aromatic substitution reaction shown. Use the template provided in the box