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Demand for gold has been stagnant for five years now. However, despite the fact that prices and production amounts have also been steady during the last five years, gold mines experienced a twelve percent increase in profits this year.

Any of the following statements, if true about last year, helps to explain the rise in profits EXCEPT:

A. Many smaller gold mines were acquired by a larger mining conglomerate, prompting a fall in the price of mining supplies as the number of potential buyers reduced.
B. Gold mines have reduced labor costs by switching from paying miners an hourly wage to paying them by the amount of ore mined.
C. The price of cyanide, a vital component of the chemical process used to extract pure gold from its ore, dropped over twenty-five percent.
D. Many nations that consume large amounts of gold increased their production of electronics, which require the use of gold as a conductor, yet their overall use of gold decreased.
E. Taxes on mining activities in gold producing regions were lowered.

D is the best choice.

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