Please solve the following and show work. Thank you

7. A firm is considering three mutually exclusive alternatives as part of a production improvement program. The alternatives are Install cost $10.000 $15.000 $20.000 Uniform annual benefit 1,625 1.530 1.890 Useful life ,in years 10 20 20 For each alternative, the salvage value at the end of its useful life is zero. At the end of ten years, A could be replace with identical cost and benefits. The minimum attractive rate of return is 6%. Which alternative should be selected