The 'Bretton Woods System' Was A

The 'Bretton Woods System' was a:

A) system of fixed exchange rates based on the gold standard.
B) system of fixed exchange rates where central banks fixed the value of their currencies against the US$.
C) system of floating exchange rates where central banks floated the value of their currencies.
D) system of managed-float exchange rates where demand and supply mainly determined the value of currencies with occasional government intervention.