问题
单项选择题
Which of the following is least likely to affect the elasticity of supply for a good（）
A. The time frame for making the supply decision.
B. The uniqueness of production inputs.
C. The relative amount of income spent on the good.
答案
参考答案：C
解析：
Elasticity of supply is influenced by the time frame within which the supply decision is made and the ability to make substitutions between productive resources. Unique inputs do not have good substitutes. The relative amount of income spent on a good is a determinant of the price elasticity of demand.