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
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