Over the Last Two Centuries of Exchange Rate "Regimes," the History

Over the last two centuries of exchange rate "regimes," the history can be divided into three phases.In chronological order they are:

A) the gold standard,the Bretton Woods system,and the era of floating exchange rates.
B) the Bretton Woods system,the gold standard,and the era of floating exchange rates.
C) the era of floating exchange rates,the gold standard,and the Bretton Woods system.
D) the gold standard,the Bretton Woods system,and the EMS.
E) the silver standard,the Bretton Woods system,and the era of floating exchange rates.