Suppose one observes that when the price of peanut butter increases, the demand for jelly increases. One must conclude that:


Suppose one observes that when the price of peanut butter increases, the demand for jelly increases. One must conclude that:

A.peanut butter and jelly are complements.

B.peanut butter and jelly are inferior goods.

C.peanut butter and jelly are normal goods.

D.peanut butter and jelly are substitutes.

正确答案:peanut butter and jelly are substitutes.


Tag:微观经济学 中国大学MOOC微观经济学 时间:2021-12-11 14:32:52