Which of the Following Statements Is True About the Aggregate

Which of the following statements is true about the aggregate demand curve?

A) It shows the relationship between the overall price level and the level of total demand.
B) It maps to the price level on the horizontal axis and output on the vertical axis.
C) It is upward-sloping, unlike the individual demand curve.
D) It shows the relationship between the price of goods and services and the level of total demand.