The Text Characterized a "Perfect," or Ideal, Currency as One

The text characterized a "perfect," or ideal, currency as one having three characteristics. Included in the list of ideal characteristics is (are) which of the following?

A) The currency should be freely floating against the currencies of the country's major trading partners so that the market determines the exchange rate without government intervention.
B) Each country would set its own monetary and fiscal policy solely on the basis of its own economic situation.
C) Complete and unrestricted monetary flows should be permitted, allowing investors and businesses to move their wealth as they choose.
D) All of the statements above are characteristics of an ideal currency.
E) Only statements b and c are correct.