问题
单项选择题
Which of the following statements regarding diminishing marginal returns is most accurate（）
A. As the quantity produced rises, costs begin to rise at a decreasing rate.
B. As the quantity produced falls, costs begin to rise at a decreasing rate.
C. As the quantity produced rises, costs begin to rise at an increasing rate.
答案
参考答案：C
解析：
At production levels that are consistent with decreasing marginal returns, costs will increase at an increasing rate as production rises.