单选题
A firm will employ physical capital up to the level where the present value of the marginal revenue product of capital is equal to the:
A. wage rate.
B. firm's cost of capital.
C. marginal revenue product of labor.
A
B
C
【正确答案】
B
【答案解析】
[解析] 厂商为了实现利润最大化,应当使资本的边际收益产品的现值等 于厂商的资金成本。
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