An investor converted 1 million US dollars to euros at an exchange rate of 0.88 euros per US dollar. She then invested the euros in euro-denominated one-year CDs that pay 5.68 percent interest annually. When the term of the CDs ends, she converts the euros back to US dollars at an exchange rate of 0.93 euros per US dollar. The annual US dollar rate of return earned was 0.00 percent 5.68 percent 6.11 percent 5.28 percent It cannot be determined based on the information given