In the graph below, suppose that supply curves for pizza is given by S; and that the initial market equilibrium price of pizza, P5", is 515 [P3 = $15), and the initial market equilibrium quantity is (11*. Assume that cheese is an input of pizza. a} In the graph below, illustrate a demand for pizza that is elastic at the initial market equilibrium. b] Illustrate and explain the effect of an decrease in the price of cheese on the total revenue of pizza producers. Will the total revenue of pizza producers increase, decrease, or remain unchanged? Justify your conclusion by showing graphically and labeling clearly and completely the effects on overall total revenue ca used by {i} the change {gain or loss) in total revenue caused by the change in the equilibrium price of pizza, and, [ii] the change [gain or lass} in total revenue caused by the change in the equilibrium quantity of pizza. [10 points] Price. P SIG. 520 91* = 515 510 55 0 Q1 ' Quantity, (1