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The following table shows the costs and benefit of producing a commodity. Table 13.1 Private Cost (in Social Cost (in Benefit Quantity dollars) dollars) (in dollars) 16 140 120 26 35 3 124 BO 30 4 28 34 28 15 130 36 24 According to Table 13.1, at the free market equilibrium: O 1 unit of output is produced. 5 units of output is produced. O 2 units of output is produced. 4 units of output is produced. 3 units of output is produced