Based on these graphs, in both cases _____.

The _____________ indicates the least costly way of producing each output level when all inputs can be varied.

Fill in the blank(s) with the appropriate word(s).

Which of the following is not a benefit resulting from international policy coordination?

A) International policy externalities can be internalized. B) It makes the most out of the limited tools central banks have to manage the economy. C) Governments working together are often better positioned to withstand domestic objections to policies if they stand together. D) All of the above are benefits.