What is Modified duration for the portfolio using the shares of market value as the weights? 09.03 8.07 10.1 0.09 An investment fund owns the following portfolio of 3 different types of bonds: Amount Invested Bond Bond Type Par value of Coupon each bond Rate Time-to- Yield-to- Maturity Maturity Annual $2 million A $100 8% Exactly 3 years coupon bond 7% $3 million B. Zero-coupon $100 bond none Exactly 5 years 10% $5 million Perpetuity $100 4% Infinite 7%