单项选择题

Which of the following is least likely to be considered a reason why regulation of monopolies is not effective（）

A. Regulators do not know the firm’s cost structure.
B. Regulation shifts industry demand and increases prices.
C. Regulation reduces the incentive for firms to reduce costs.

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单项选择题

Which statement about renewable and non-renewable resources is most accurate（）

A. The price of a renewable resource is the present value of its expected next-period price.
B. Land is considered a renewable resource.
C. The known stock of a non-renewable resource must decrease as the resource is used.

单项选择题

A monopolist will maximize profits by:（）

A. producing at the point where price is equal to MR.
B. producing at the output level where marginal revenue equals average variable cost and charging a price along the demand curve that corresponds to the output rate.
C. producing at the output level where marginal revenue equals marginal cost and charging a price on the demand curve that corresponds to the output rate.