In 1867, France created the "Napoleon" coin that was worth 25 French francs and 5 U.S. dollars (the same weight as the American Half-Eagle). This meant that the French franc to U.S. dollar conversion rate was?

A. 1 French franc= 0.25 U.S. cents

B. 1 U.S. dollar equals 5 French francs

C. USDFRF= 25

D. All of the above