Bema Gold is an exploration and production company that trades on the Toronto stock exchange. Assume that when purchased by an U.S. investor the stock's price and the exchange rate were CAD5 and CAD1.39=USD1.00 respectively. At selling time, one year after the purchase date, they were CAD6 and CAD1.00=USD1.00. Calculate the investor's annual percentage rate of return in terms of the U.S. dollars.

A. -13.60%

B. 28.00%

C. 38.89%

D. 66.67%