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Consider a polluting firm with a marginal abatement cost function equal to: MAC = 20 - 4E. If the price of permits is $4 and the firm is endowed with 3 permits, the firm will Select one: O a. Sell 2 permits. O b. Buy 2 permits. O c. Sell 1 permit. O d. Buy 1 permit.Consider Graph #4. Imagine the government gives a subsidy to abatement to achieve the socially efficient outcome. The subsidy payment equals: MED Graph #4 A Select one: O a. OBCE O b. OBCG O C. ABCE O d. BAED