command-and-control framework

Under a strict command-and-control framework, suppose abatement standards are set equally across polluters. Assume the total abatement target is set at 45 units. Show the cost implications using three graphs, each of a different polluter with a unique MAC curve drawn to depict a low-cost abater, a moderate cost abater, and a high-cost abater. On each graph, identify the abatement level corresponding to a uniform standards approach, and show the level of MAC at that point and the area corresponding to TAC.