Which one of the following policies would not reduce water use?

An upward sloping isoquant

A) can be derived from a production function with one input B) can be derived from a production function that uses more than one input where reductions in the use of any input always reduces output C) cannot be derived from a production function when a firm is assumed to maximize profits D) can be derived whenever one input to production is available at zero cost to the firm E) none of the above

Which of the following statements concerning pollution is correct?

A) Economic efficiency requires that pollution be completely eliminated. B) Economic efficiency dictates that the optimal amount of pollution arises at the point at which price equals private marginal cost. C) Pollution should be reduced to the point at which the marginal benefit from further reduction equals the marginal cost of further reduction. D) Pollution should be reduced to the extent necessary to return production to the production possibilities frontier.