Assume that scientific studies provide you with the following information concerning the benetits and costs of sulfur dioxide emissions Benefits of abaling reducing) emissions MB = 400-20A Costs of abating emissions MC = 260+5A where A is the quantity abated in millions of tons and the benefits and costs are given in dollars per on What is the socially efficient lovol or omissions abatement? [Enter your response rounded to two dico places.) The socially efficient level of emissions abatement is tons What are the marginal benefit and marginal cost of abatement at the socially efficient level of abatement? The marginal benefit equals the marginal cost, which is $240 (Enter you respois rounded to two das places.) What happens to net social benefits benefils minuscosis) if you abate one milion more tons than the efficient level? One million fewer? than the marginal If you abate one million more tons, the biginal cost of sbatenent will be greater than the marginal benefit and not social benefit will decrease if you abale one milion tewer tors the marginal cost of shatement will be less 1 benett and net social benefit will decrease Why is it socially eficient to set marginal benetits equal to marginal costs rather than abating until total benelits equal total costs.? A. The objective is to maximize nel benefit which is marginal bencfi minus marginal unst Dollars should be atacated to abatement only so long as the benetit of the last unit of abstement is grcal than or equal to the end of the last unt of abalonant OB. The objective is to maximize nel benefit, which is marginal benefit minus marginal cost. Dollars should be allocated to abatement until the benefit of the last unit of abatement is slightly less than the cost of the last unit of abatement