Solve my task in excel file and give explanation also

Suppose a Defined benefit Fund has the following scheduled liabilities: Year Year 1 Year 2 Year 3 Year 4 Year 5 Year 6 Year 7 Year S Year 9 Year 10 Liabili '000 USD Sl,ooo Sl,ooo OOO Sl,ooo S2,500 S2,500 S2,500 S2,500 S3,ooo $3,500 Additionally, the following bonds are available in the market: 2 10 ear Cou n Rate 30/70 40/0 50/0 All bonds have a S 100 fice value and are selling at par. Show with appropriate calculations a possible bond portfolio that will match the scheduled liabilities. Highlight the limitations of the analysts undertaken.