单选题 An increase in the expected rate of inflation is most likely to cause aggregate demand and short-run aggregate supply to: Aggregate demand Short-run aggregate supply ①A. Increase Increase ②B. Increase Decrease ③C. Decrease Increase

A、

A. ①
B、

B. ②
C、

C. ③

【正确答案】 B

【答案解析】Increasing inflation expectations lead to higher money wage rates, which causes a decrease in short-run aggregate supply (SAS curve shifts to the left). Higher expected inflation will also encourage consumers to make purchases sooner than they otherwise would have, which increases aggregate demand (shifts the AD curve to the right).