3. A firm has identified three viable but mutually exclusive investment alternatives. The life of all three alternative is estimated to be 5 years with negligible salvage value. The MARR is 7% Investment Annual Net Income Return on total investment $10,000 2,638 10% Az $14,000 3,884 12% A $17,000 4,600 11% Find the alternative that should be selected by using the following: a. IRR on incremental investment. b. Future worth on incremental