2. A firm is considering three mutually exclusive alternatives as part of a production improvement program. The alternatives are: The salvage value at the end of the useful life of each alternative is zero. The maximum attractive rate of return is 6%. Which alternative should be selected? Use PW analysis with least common multiple method. A B C Install Cost, $ $10,000 $15,000 $20,000 Uniform Annual Benefit, $ per $1,625 $1,530 $1,890 year Useful life, 10 20 20 years