Figure 7-6 -Refer to Figure 7-6. Suppose the Economy Is Initially in Is

Multiple Choice

Figure 7-6
-Refer to Figure 7-6. Suppose the economy is initially in short-run equilibrium at B. A shift from AD₁ to AD₂ could have been caused by all of the following except

A) an increase in consumer optimism.
B) economic prosperity in foreign economies.
C) a personal income tax cut.
D) an increase in the price level from P_a to P_b.