Other things equal, what effect will each of the following have on the equilibrium price level and the level of real output?
A- An increase in aggregate demand in the steep portion of the aggregate supply curve?
B- An increase in aggregate supply, with no change in aggregate demand (assume that prices and wages are flexible upward and downward)
C- Equal increases in aggregate demand and aggregate supply
D- A reduction in aggregate demand in the relatively flat portion of the aggregate supply curve
E- An increase in aggregate demand and a decrease in aggregate supply