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Which of the following is true?
A.
Countries that want to have a fixed exchange-rate regime should be willing to refrain from policy changes that lead to large international capital flows.
B.
For a floating exchange-rate to work for a country, it cannot have an inflation rate that is much above the inflation rate(s) of its primary trading partners.
C.
Fixed exchange-rates encourage countries to have different goals, priorities and policies with respect to macroeconomic variables.
D.
If capital is highly mobile, fiscal policy then loses its effectiveness under a fixed exchange rate.