none of the above is an option for questions

ABC Manufacturer is a small, but growing, yam manufacturer specializing in spinning and dying blue-faced leicester wool into hand-knitting yam. The management of the company has decided to build a new mill in Moncton and wants to establish a construction fund to pay for the facility. The construction of the mill is expected to take 6 months and cost $650,000. ABC Manufactuer's contract with the construction company requires it to make payments of $200,000 at the end of the second and fourth months and a final payment of $250,000 at the end of the sixth month when the mill is completed. ABC Manufacturer can use four investment opportunities to establish the construction fund; four investment opportunities are summarized in the following table. The table indicates that Investment A will be available at the beginning of each of the next six months, and funds invested in this manner mature in one month with a yield of 1.3%. Funds can be placed in Investment B only at the beginning of Month 1 and/or Month 5 , and mature at the end of two months with a yield of 2.7\%. Funds can be placed in Investment C only at the beginning of Month 2 and/or Month 4 , and mature at the end of three months with a yield of 4.3%. Funds ean be invested in Investment D only at the beginning of Month 3, which will return a yield of 5.7% at the end of four months. The management of ABC needs to determine the investment plan that allows them to meet the required schedule of payments while placing the least amount of money in the construction fund. Ai= The number of dollars invested at the beginning of month i in option A, where i=1,,6. B1 = The number of dollars invested at the beginning of the first month in option B. B5 = The number of dollars invested at the beginning of the fift month in option B. C2 = The number of dollars invested at the beginning of the second month in option C. C4 - The number of dollars invested at the beginning of the fourth month in option C. D3 = The number of dollars invested at the beginning of the third month in option D. The objective function can be Minimize A1+B1+C2+D3 Maximizo A1+B1 Ai= The number of dollars invested at the beginning of month i in option A, where i=1,,6. B1= The number of dollars invested at the beginning of the first month in option B. B5= The number of dollars invested at the beginning of the fifth month in option B. C2= The number of dollars invested at the beginning of the second month in option C. C4= The number of dollars invested at the beginning of the fourth month in option C. D3 = The number of dollars invested at the beginning of the third month in option D. The constraint at the beginning of the third month can be 1.013A2+1.027B1=A3+D3+200,000 1.013A2+1.027B1A3+D3 1.013A2+1.027B1=A3+D3 1.013A2+1.027B1A3+D3 None of the above Ai= The number of dollars invested at the beginning of month i in option A, where i=1,,6. B1 = The number of dollars invested at the beginning of the first month in option B. B5 = The number of dollars invested at the beginning of the fifth month in option B. C2 - The number of dollars invested at the beginning of the second month in option C. C4 = The number of dollars invested at the beginning of the fourth month in option C. D3 = The number of dollars invested at the beginning of the third month in option D. The constraint at the beginning of the fourth month can be 1.013A3=A4+C4+200,000 1.013A3A4+C4+200,000 1.013A3=A4+C4 1.013A3