Qualis Investments is a private limited business that manages personal financial portfolios. The company manages six mutual funds and has a client that has acquired $750,000 from an inheritance. Characteristics of the funds are given in the table below. Qualis Mutual Fund Data Expected Annual Return Risk Measure 1 Qualis Low-priced Stock Fund 7.23% 11.87 2 Qualis Mutilnational Fund 8.42% 12.62 3 Qualis Mid-cap Stock Fund 6.66% 13.72 4 Qualis Mortgage Fund 2.72% 3.37 5 Qualis Income Equity Fund 8.89% 8.4 6 Qualis Balanced 3.50% 6.91 The company recommends that no more than $300,000 be invested in any individual fund, and that at least $80,000 be invested in each of the mid-cap stock and mortgage fund. The total amount invested in the low-priced and multinational funds are at least 35% of the total investment. The client would like an average return of at least 6%. Assume that X1- X6 represent the dollar amounts invested in funds 1 through 6, respectively. Which of the following is the objective function minimize total risk?单项选择题

A

7.23 X1 + 8.42 X2 + 6.66 .X3 + 2.72 X4 + 8.89 X5 + 3.5 X6 ≥ 6%

B

11.87 X1 + 12.62 X2 + 13.72 .X3 + 3.37 X4 + 8.4 X5 + 6.91 X6

C

7.23 X1 + 8.42 X2 + 6.66 .X3 + 2.72 X4 + 8.89 X5 + 3.5 X6

D

((11.87 X1 + 12.62 X2 + 13.72 .X3 + 3.37 X4 + 8.4 X5 + 6.91 X6) / 750,000)

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