1. (5 pts) An investor has $1,000,000 to spend on bond investments. There are four choices. She has three limitations: The worst-case return of the portfolio must be at least 8%, The average duration of the portfolio must be at least 6, and no bond can use more than 40% of the funds. The returns, worst-case, and duration are given in the table. Bond 1 Bond 2 Bond 3 Bond 4 Expected Worst Return Case 0.13 0.06 0.08 0.08 0.12 0.1 0.14 0.09 Duration 3 4 7 9 Develop a LP model and write out the standard format. You do not have to solve the