Categories Economics Suppose the demand for good Z goes up when the price of good Y goes down. We can saythat goods Z and Y are Post author By esimpk Post date June 17, 2021 A. perfect substitutes. B. unrelated goods. C. complements. D. substitutes ← Demand curves in P-Q space are derived while holding constant → uppose the demand for good Z goes up when the price of good Y goes down. We can saythat goods Z and Y are