NO.PZ2023010401000035
问题如下：
Which of the following best describes the elasticity of demand in a perfectly competitive market?选项：
A.The firm elasticity is zero and the market elasticity is infinite. B. The firm elasticity is infinite and the market elasticity is zero. C.The firm elasticity is infinite and the market elasticity is some finite number.解释：
Infinite elasticity reflects perfect elasticity of demand. This characterizes the elasticity of demand for the products of a firm operating in a perfectly competitive market. If the firm increases prices, customers will go to another firm. However, the market demand is not perfectly elastic as it depends on substitutability with other products. Market elasticity will be greater than zero but less than infinite.
中文解析：
无限弹性反映了需求的完全弹性。这就是在完全竞争市场上经营的企业的产品的需求弹性的特征。如果这家公司提高价格，顾客就会转向另一家公司。然而，市场需求并不是完全弹性的，因为它取决于与其他产品的可替代性。市场弹性将大于零，但小于无限。
这个题不太理解，麻烦老师讲一下原理细节，谢谢，对于需求和弹性的关系理不清
