Refrigerator producers use CFC in production which has a number of external costs. Specifically, CFC destroys ozone in the atmosphere. In the absence of regulation: A. not enough refrigerators will be produced b. price of refrigerator will be below the social cost of the last refrigerator produced c. price of refrigerators will be below the value of the last refrigerator produced. D. the price of refrigerators will be below the private cost of the last refrigerator produced