4 - 5). In the 1990s the Mobil Oil Corporation acquired the rights to increase pollution by 900 pounds of sulfur dioxide per day at its Torrance, California, refinery. These rights were purchased from South Gate, California, at a price of $3 million after the latter acquired them from General Motors. As a result of this change, Mobil increased its output of noxious vapors in Torrance, California, by 900 pounds per day. Do you think the environment was harmed as a result of the sale of these pollution rights? Explain.