单选题 The demand for a given resource will most likely decrease if the prices of substitute resources and complementary resources, respectively: Prices of substitute resources Prices of complementary resources ①A. Increase Increase ②B. Increase Decrease ③C. Decrease Increase

A、

A. ①
B、

B. ②
C、

C. ③

【正确答案】 C

【答案解析】A decrease in the price of a substitute resource would induce producers to use the substitute resource, reducing demand for the resource in question. An increase in the price of a complementary resource would decrease demand for both resources.