If the marginal benefit of reducing water pollution is constant at $10 per ton, then it is efficient to reduce water pollution:
A. to zero.
B. until the marginal cost of reducing water pollution equals $10 per ton.
C. as long as the marginal cost of reducing water pollution is greater than $10 per ton.
D. to whatever level the market determines.
Answer: B
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Price and concentration ratios are inversely related
Indicate whether the statement is true or false
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