Exchange rate problem

Suppose the CFO of an American corporation with surplus cash flow has $1 million to invest. Suppose that the interest rates on 3-month CD deposits in US banks is 2%, while rates on 3-month CD deposits denominated in euros in German banks are currently 4.2%. Suppose further that the CFO expects that the (euro/$) exchange rate will increase from (.76) euros per $ to (.8) euros per $ during the coming year. Assume that the CFO plans to roll over the 3 month CD's for a year and that she does not expect their yields to change over that period....that is you can assume that the CFO plans to stay invested for a year and that she expects the annual % yield on $ CD's to be 2%, and the annual yield on CD's denominated in Euro's to be 4.2%

Should the CFO invest in CD's denominated in dollars or in euros? Show your work!