本题目来源于试卷: IB Economics Unit 3.1: Macroeconomics - Economic Output, AD & AS，类别为 IB经济学
[单选题]
Identify the true statements about the increase in AD (AD to $AD_1$):
I.There will be an increase in the average price level
II.The level of output will not increase
III.There will be a drop in unemployment
A. I only
B. I and II only
C. I and III only
D. III only
参考答案: B
本题详细解析:
Statement I is correct because an increase in AD alonw 07sm ef c/7stwvtm+5g the vertical section of the Keynesian AS will create inflationary pressure 7f t5m/se0w+ct v7 mwsas the economy is operating at full capacity.
Statement II is correct because the economy is producing its full employment level of output ($Y_{fc}$ ) and any further increase in AD will be purely inflationary, not leading to any increase in output.
Statement III is incorrect because the economy is already operating at full employment level of output and so any increases in AD will not create a drop in unemployment.
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