In the presences of purchasing power parity, if one-dollar exchanges for 2 British pounds and if a DVD player costs $400 in the United States then in Britain the DVD player should cost ?

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In the presences of purchasing power parity, if one-dollar exchanges for 2 British pounds and if a DVD player costs $400 in the United States then in Britain the DVD player should cost ?

A. 200 pounds
B. 400 pounds
C. 600 pounds
D. 800 pounds