You are South African and hold a U.S. Treasury bond with a full price of 100, The bond has a duration of 5, its yield is 8% and the USD and ZAR cash rate is 2% and 5% respectively. You expect the US yield to move down by 10 basis points over the year. What is the return on your investment assuming you hedged your currency risk. Prove that the risk premium is the same whether you are a South African or American investor. If you expect the USD to depreciate, would this improve or decrease your return (for the SA investor)