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单项选择题

When a firm operates under conditions of pure competition, marginal revenue always equals:

A. price.
B. average fixed cost.
C. average variable cost.

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单项选择题A firm operating under conditions of pure competition will:

A. face a vertical demand curve.
B. generate zero economic profit in the long run.
C. produce a quantity where marginal revenue is less than marginal cost.

单项选择题The least likely reason why a firm in perfect competition is a price taker is because:

A. buyers are well informed about prices of other firms.
B. it can set its products’ price at’ or above the market price.
C. it produces a very small portion of the total output of a particular good.