新興古典 - 經濟

問題: Without other policy changes, if a permanent decrease happened for the
money supply, which of the following is true?

(A) IS shifed to the left and LM moved up.
(B) IS shifed to the right and LM moved up.
(C) IS shifed to the left and LM moved down.
(D) IS shifed to the right and LM moved down.


答案:A

他說的permanent decrease happened for the money supply
指的是什麼咧? 為什麼IS也會變動~~

最近腦筋愈來愈混沌~@@
麻煩大家看一下~~

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