As a financial analyst at Bank of America Merrill Lynch, you want to find out how the credit risks impact the yield to maturity on a bond. A 12% bond maturing in three years is priced at 85% of the face value. Suppose that there is a 20% chance that at maturity the bond will default and you will receive only $400 payment. a. What is the bonds promised yield to maturity? (sample answer: 15.50%) b. What is its expected yield to maturity?