please show excel formulas so I can understand the problem

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9-50 Consider four mutually exclusive alternatives: () A B C D Cost $75.0 $50.0 $15.0 $90.0 Uniform annual 18.8 13.9 4.5 23.8 benefit Each alternative has a 5-year useful life and no sal- vage value. The MARR is 10%. Which alternative should be selected, based on (a) The payback period (b) Future worth analysis (c) Benefit-cost ratio analysis