Refer to Figure 13.5 for the Following Question

Multiple Choice

Refer to Figure 13.5 for the following question.
Figure 13.5

-Refer to Figure 13.5. If government purchases increase by $100 billion and lead to an ultimate increase in aggregate demand as shown in the graph, the difference in real GDP between point A and point B will be:

A) $100 billion.
B) less than $100 billion.
C) more than $100 billion.
D) There is insufficient information given here to make a conclusion.