Couple questions here...
"Under fixed exchange rates,"
A. The Free Market is the major determinant of the exchange rate.
B. Official government transactions maintained the agreed-upon exchange rate by buying and selling foreign exchange.
C. The balance of payment is ignored.
"Since World War II, the international financial system has been coordinated:"
A. By a fixed exchange rate system only.
B. By a flexible exchange rate system only.
C. First by a fixed exchange rate system and then by a flexible exchange rate system.