Which of the following statements is true? a A disadvantage of a fixed exchange rate system is that governments are not required to constantly intervene in the foreign exchange market to maintain exchange rates within specified boundaries. O An advantage of a fixed exchange rate system is that governments are required to constantly intervene in the foreign exchange market to maintain exchange rates within specified boundaries. O A disadvantage of a fixed exchange rate system is that governments are required to constantly intervene in the foreign exchange market to maintain exchange rates within specified boundaries. o An advantage of a fixed exchange rate system is that governments are not required to constantly intervene in the foreign exchange market to maintain exchange rates within specified boundaries