uppose opec is unable to come to an agreement regarding oil production and as a result the price of oil drops. which of the following would you expect to occur as a result of this favorable supply shock? a. the short-run phillips curve will shift to the right and the unemployment rate will increase. b. the short-run phillips curve will shift to the left and the unemployment rate will decrease. c. the short-run phillips curve will shift to the left and the unemployment rate will increase. d. the short-run phillips curve will shift to the right and the unemployment rate will decrease.