Time left 0:45:51 Suppose that the cross-price elasticity of demand between hot dogs and mustard is -2. This means that hot dogs and mustard are and that the quantity of hot dogs purchased will if the price of mustard falls 20 percent. Select one: O a. complements; fall by 20 percent. cross O b. complements; rise by 40 percent. cross O c. substitutes; rise by 20 percent. cros O d. complements; rise by 20 percent. cro O e. substitutes; fall by 20 percent. Of. substitutes; rise by 40 percent