When Looking at a Graph of Aggregate Demand, Which of the Following

Multiple Choice

When looking at a graph of aggregate demand, which of the following is correct?

A) There are nominal variables on both the vertical and the horizontal axes.
B) There are real variables on both the vertical and horizontal axes.
C) The variable on the vertical axis is nominal; the variable on the horizontal axis is real.
D) The variable on the vertical axis is real; the variable on the horizontal axis is nominal.