Problem 8-20: Multiple Alternatives Wayward Airfreight, Inc. is considering a new automatic parcel sorter. Each choice has a 7-year life First cost Salvage value Annual benefit Yearly O&M cost SHIP-R $184,000 38,300 75,300 19,000 SORT-Of $235,000 44,000 89,000 19,000 U-SORT-M $170,000 14,400 68,000 12,000 (a) Construct a choice table for interest rates from 0% to 100%. (b) Using a MARR of 15% and a rate of return analysis, which alternative, if any, should be selected