If the cross-price elasticity of demand between wine and beer is 0.31 you can conclude that wine and beer are ____________________ and 10% increase in the price of wine ___________ demand for beer and the quantity demanded for beer by ______________percent. a) complements; increases; 10% b) substitutes; increases; 3.1% c) inferior; decreases; 10% d) normal; decreases, 31%