French fries and hamburgers are complements in consumption. Suppose the cost of the ingredients used to make hamburgers rises, so that the price of a...

French fries and hamburgers are complements in consumption. Suppose the cost of the ingredients used to make hamburgers rises, so that the price of a hamburger rises. Then the equilibrium price of french fries _____ and the equilibrium quantity _____.

Select one:

A: rises; increases

B: rises; decreases

C: falls; increases

D: falls; decreases