QUESTION 20 An increase in the price of oil will result in A a decrease aggregate supply, a lower output, and a higher price level. B. an increase in aggregate demand, a higher output, an a higher price level. C. an increase in aggregate supply, a higher output, and a higher price level. D. a decrease in aggregate demand, a lower output, and a lower price level. QUESTION 21 A decrease in consumer and business confidence will result in A. a lower aggregate demand, a lower output, and a lower price level. B. a lower aggregate supply, a lower output, and a higher price level. C.a decrease in aggregate demand and a decrease in aggregate supply, a lower output, and a lower price level. D. a decrease in aggregage demand and a decrease in aggregate supply, and no change in output or the price level