You are managing a fixed interest portfolio of $1 million Your target duration is 10 years and you can choose between two bonds: a zero coupon bond with maturity of five years, and a perpetuity, each yielding 5%. (a) How much of each bond will you hold in your portfolio? (5 marks) Click or tap here to enter text. (b) How will these fractions change next year if target duration is now 9 years