题目内容：
在一个三部门经济中，假设消费函数是c＝400＋0.8y，如果税收减少200，收入会（）。
A.减少800
B.减少600
C.增加600
D.增加800
参考答案：
选择题：在一个三部门经济中，假设消费函数是c＝400＋0.8y，如果税收减少200，收入会（）。
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- 题目类型：选择题
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