Exhibit 23-1 -According to Exhibit 23-1, Which of the Following Best Explains

Multiple Choice

Exhibit 23-1
-According to Exhibit 23-1, which of the following best explains the change in real GDP from year B to year D?

A) The available supply of labor fell.
B) Foreign countries must have decided to purchase more U.S.goods.
C) The government must have cut taxes.
D) Consumers must have become more optimistic.
E) Firms must have become more pessimistic.