政策能达到这个目标？也请描述政策对价格水平的影响。 a．A国实施固定汇率制，总供给为基本凯恩斯学派情形。 b．B国实施弹性汇率制。总供给为极端凯恩斯学派情形。 c．C国为固定汇率制。总供给为古典派情形。 d．D国为弹性汇率制。总供给为古典派情形。 Assume that the governments of countries A，B，C，and D have decided to use either monetary or fiscal policy to increase aggregate demand and output．Which policy will achieve this objective for each country？Describe also the effects of the policies on the price level． a．Country A has a fixed exchange rate and the aggregate supply is represented by the normal Keynesian case． b．Country B has a flexible exchange rate and the aggregate supply is represented by the extreme Keynesian case． C．Country C has a fixed exchange rate and the aggregate supply is represented by the classic case． d．Country D has a flexible exchange rate and the aggregate supply is represented by the classic case．
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