Multiple Choice
You decide to join the economics club, but this means you can't join the accounting club because it meets at the same time. This statement best represents this economic concept:
A) The real cost of something is what you must give up to get it.
B) "How much" is a decision at the margin.
C) People usually exploit opportunities to make themselves better off.
D) There are gains from trade.
Correct Answer:

Verified
Correct Answer:
Verified
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