In the good old days (1986), the U.S. dollar was worth 1.85 Swiss Francs.  Over two decades later in 2012, the dollar was worth 0.91 Swiss Francs.  The value of the dollar in Swiss Francs went down by about   A. 49%   B. 94%   C. 51%   D. Can’t tell without knowing the CPI for 1986.   E. 203%

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