Use the Figure Below to Answer the Following Questions

Use the figure below to answer the following questions.

Figure 27.2.1
There are no exports or imports in this economy.
-Refer to Figure 27.2.1. When real GDP is equal to Yb, then aggregate planned expenditure is

A) less than real GDP, and real GDP decreases.
B) less than real GDP, and real GDP increases.
C) greater than real GDP, and real GDP increases.
D) greater than real GDP, and real GDP decreases.
E) equal to real GDP, and real GDP neither increases nor decreases.