Categories Economics If the demand for coffee decreases as income decreases, coffee is Post author By esimpk Post date June 17, 2021 A. a normal good. B. a complementary good .C. an inferior good. D. a substitute good ← uppose the demand for good Z goes up when the price of good Y goes down. We can saythat goods Z and Y are → Which of the following will NOT cause a shift in the demand curve for compact discs?