Most Economists Trace the Breakup of the Bretton Woods Fixed

Most economists trace the breakup of the Bretton Woods fixed exchange rate system,in 1973,to the:

A) rise of communism in Eastern Europe.
B) economic integration movement sweeping Western Europe.
C) macroeconomic policy package in the U.S.during 1965 to 1968.
D) increase in inflation and the worsening of the British foreign trade position.