问题
单项选择题
As the quantity of labor increases, which of the following is the most likely outcome with respect to the marginal revenue (MRP) of labor（）
A. MRP increases for a monopoly.
B. MRP decreases for a firm in perfect competition.
C. MRP increases for both monopoly and a firm in perfect competition.
答案
参考答案：B
解析：
[分析]： 在边际产量递减规律的作用下，随着劳动数量的增长，完全竞争厂商的边际收益产品(MRP)将相应下降。 [考点] 边际收益与边际收益产品