The opportunity cost of a hot dog in terms of hamburgers is the (一个热狗在汉堡包的机会成本是——中文由在线翻译而来,仅供参考.下同.)
A.
ratio of the slope of the demand curve for hot dogs to the slope of the demand curve for hamburgers.热狗需求曲线的斜率与汉堡包需求曲线的斜率之比。
B.
ratio of the slope of the supply curve for hot dogs to the slope of the supply curve for hamburgers.热狗供应曲线的斜率与汉堡包供应曲线的斜率之比。
C.
money price of a hot dog minus the money price of a hamburger.热狗的货币价钱减去了汉堡的货币价格。
D.
ratio of the money price of a hot dog to the money price of a hamburger.热狗的货币价格与汉堡的货币价格的比率。