1.       Which of the following is probably not a way of increasing money GDP?

A.     A tax rise (T) equal to expenditure increase (G).

B.      A tax rise (T) smaller than the expenditure increase (G).

C.      A reduction in taxes (T).

D.     An expansion of expenditures (G).

E.      A balanced reduction in expenditures (G) and taxes (T).

这道题是网上说萨缪尔森宏观经济学的练习题，答案选E。如果E要正确了，A为什么不正确呢？ BCD我都知道原因，就是区别不出来A和E，麻烦高人帮我解答一下，谢谢。