4. Calculate the current value of the firm's debt. assume that the current value of the firm is $70 million, the principal amount due in 6 years if the zero-coupon bond is $35 million, the annual interest rate is 6.75% and the volatility on the firm, o, is 12.5%* (8 Points) Enter your answer 5. An investor holds a portfolio of $ 100 million This portfolio consists of A-rated bonds ($40million) and BBB-rated bonds ($60million). Assume that the one-year probabilities of default for a-rated and BBB-rated bonds are 3% and 5%, respectively, and that they are independent. If the LGD for A-rated bonds in the event of default is 70% and the recovery value for BBB-rated bonds is 45%, what is the one --year expected credit loss from this portfolio? (3 Points) Enter your