How many contracts does the portfolio manager need to hedge her portfolio in Q. 5? O 560 O 765 0918 O 660 Suppose a portfolio manager owns $5,000,000 of a 10-year A-rated corporate bond with a duration of 7.8 and a yield of 4.6%. She plans to hedge its interest rate risk with the futures contracts on 3-month U.S. Treasuries that are priced at 98-06. The treasuries deliverable under these futures are yielding 0.8% and have a face value of $100,000. Assume that after analyzing the changes in yields she finds the following relationship between the yield on these corporate bonds and treasury yields: (A-Rated Corporate Yield) = 3.25+ {0.5*(Treasury Yield)}. What will be the hedge ratio to hedge this position