问题
单项选择题
The increase in total revenue from selling the additional output of one more unit of an input is called the input’s:（）
A. factor of production.
B. marginal revenue.
C. marginal revenue product.
答案
参考答案：C
解析：
The marginal revenue product of an input is the addition to total revenue gained by selling the additional output from employing one more unit of that input.
