h par. 1. [23] Sulfur emissions from coal fired electricity plants form sulfuric acid that damages crops, forests, lakes and other parts of the environment. Since 1995, the US has operated a sulfur oxide permit market has reduced sulfur emissions to less than half their 1980 level. a. Give two reasons why, if the coal fired electricity suppliers and their marginal damage had certain characteristics, a permit system for reducing sulfur emissions would probably be less socially efficient than a regulation requiring the same percentage reduction in emissions every year at every coal fired electricity plant. What characteristics of the suppliers and their marginal damage would make that conclusion likely? Why would they make it likely