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.
【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。