单项选择题

In regulating a natural monopoly, the most commonly adopted pricing rule by a regulator is the:

A. total cost pricing rule.
B. average cost pricing rule.
C. marginal cost pricing rule.

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单项选择题Which of the following statements is not the necessary condition for effective price discrimination to occur

A. The seller must have a large advertising budget relative to sales.
B. The seller must be able to prevent customers from reselling the product.
C. The seller must have at least two identifiable groups of customs with different price elasticities of demand for the product.

单项选择题Which one of the following statements most accurately describes a significant difference between a monopoly firm and a perfectly competitive firm

A. A perfectly competitive firm minimizes costs; a monopolistic firm maximizes profit.
B. A perfectly competitive firm maximizes profit; a monopolistic firm maximizes price.
C. A perfectly competitive firm takes price as given; a monopolistic firm must search for the best price.