单项选择题

An analyst does research about equilibrium quantity. As the quantity of a product supplied is lower than the equilibrium quantity, which of the following is most likely to increase（）

A. Deadweight loss.
B. Producer surplus.
C. Consumer surplus.

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单项选择题An analyst does research about price elasticity of demand and determines that when the price of a product increases from $15 to $17, the quantity demanded decreases from 51 units to 45 units. The product's price elasticity of demand is best described as:（）

A. inelastic.
B. unit elastic.
C. elastic.

单项选择题An analyst does research about demand for labor. All else remaining the same, a firm's demand curve for labor will least likely shift in response to a change in the:（）

A. wage rate of labor.
B. price of the firm's output.
C. marginal product of labor.