In а shаred оffice spаce, Tyler enjоys smоking cigarettes while Brittany suffers from the secondhand smoke. Currently, there are no rules about smoking in the office. Tyler's been smoking about five a day. Brittany is pretty desperate, so she considers a bribe: "How much would I have to pay you to smoke one less cigarette per day?" Tyler replies, "One cigarette? I can put up with that for four dollars." She inquires: "Two per day?" Tyler says: "You'd have to pay me six more dollars for that one." The third, fourth, and fifth cigarette, could be eliminated for a bribe of an additional $8, $10, and 12$ respectively. Brittany's willingness to pay for getting rid of the first to fifth cigarette is $10, $8, $6, $4, and $2 respectively.a) Draw and label the marginal benefit and marginal cost curves of cleanup.b) Identify the efficient number of cigarettes reduced.c) Calculate the total payment required at this efficient level.d) Explain why this is the efficient level.