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Scenario 5-1 Suppose the demand function for good X is given by: de = 15 0.5Px 0.8Py where de is the quantity demanded of good X, PX is the price of good X, and FY is the price of good Y, which is related to good X. Refer to Scenario 5-1. Using the midpoint method, if the price of good X is constant at $10 and the price of good Y decreases from $10 to $8, the cross-price elasticity of demand is about 0a. 0.80, and X and Y are complements. Ob. 0.57, and X and Y are substitutes. Oc. 0.22, and X and Y are complements. Od. -2.57, and X and Y are complements. Save & Continue Continue without saving