12. Consider the following fi ve indivisible investment alternatives which, at the end of 5 years, fully refund the initial investment. Given the annual returns shown below, $150,000 of investment capital available, and a MARR of 10%, determine the optimum investment portfolio. What are the PW and IRR for the investment portfolio?

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Alternative Initial Investment Annual Return ABCDE $75,000 $8,750 $60,000 $7,250 $80,000 $9,750 $55,000 $6,500 $90,000 $10,750