According to Oatley,the American Dollar Became the Post WWII's Foreign

According to Oatley,the American dollar became the post WWII's foreign exchange system's reserve currency

A) at the insistence of American MNCs.
B) as an unintended consequence of the Bretton Woods system.
C) as an intended consequence of the Bretton Woods system.
D) at the insistence of the IMF.
E) because of the inability of the US government to exchange dollars for gold.