Assume a firm is polluting 20 units at baseline. A cap-and-trade is introduced. They are given 14 permits by the regulator. The market price for permits is $3.

Does the firm buy or sell more permits? options: ["Sell", "Nothing", "Buy"]

If so, how many? options: ["0", "4", "3", "1", "2"]

If the firm is minimizing compliance costs, what are their total compliance costs after participating in the permit market? options: (22.50, 13.50, 11, 20)