Slight Discrepancies in the Rates of Appreciation Versus Depreciation of Two

Multiple Choice

Slight discrepancies in the rates of appreciation versus depreciation of two currencies are related to:

A) a mathematical quirk that percentage increases are always larger than percentage decreases because, in the first case, the denominator is smaller.
B) the imprecise nature of the calculations.
C) the lack of reliable information.
D) the volatile nature of exchange rates.