A government bond matures in 8 years, makes annual coupon payments of 4.2% and offers a yield of 2.2% annually compounded. Assume face value is $1,000. a. Suppose that one year later the bond still yields 2.2%. What return has the bondholder earned over the 12-month period? Show your calculations b. Now suppose that the bond yields 1.2% at the end of the year. What return did the bondholder earn in this case? Show your calculations