9. For the following questions, use the diagram below: Figure 34-7. AS LRAS Price Level a b AD1 AD2 Quantity of Output Refer to Figure 34-7. The aggregate-demand curve could shift from AD 1 to AD 2 as a result of A. a decrease in the price level. B. an increase in government purchases. C. households saving a smaller fraction of their income. D. a decrease in net exports