![](https://i.imgur.com/nteQZp9.jpg)
[考題] 經濟學觀念
![](https://i.imgur.com/nteQZp9.jpg)
請問選項b是什麼觀念呢?
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11/25 21:32, , 1F
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11/25 21:59, , 2F
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11/27 05:54, 7F