A job can be done with Machine A that costs $12,500 and ha annual end-of-year maintenance costs of $5000; it salvage value after g years is $2,000. Or the job can be done with Machine B, which cost $15,000 and has end-of year maintenance costs of $4,000 and a salvage valve of $1500 at the end of y years. Then investment can be represented in the future, and to ur work is expected to continue indefinitely. Use the present worth, annual worth, and capital iced cost to compare the machines. The interest rate 5% / year