The Aggregate Demand Curve

The aggregate demand curve:

A) is upward-sloping, because a higher price level makes production more profitable
B) is downward-sloping, because a higher price level makes production more profitable
C) shows the amount of real output that will be produced at each possible price level
D) shows the amount of real output that will be purchased at each possible price level
E) is upward-sloping, because a higher price level increases real expenditures