For the cash flow below, use an annual worth comparison to determine which alternatives is best at an interest rate of 1% percent per month. X Y First cost $: -400,000 -900,000 Maintenance cost, $/month:-20,000 -13,000 Overhaul every 10 yrs., $: ----- -80,000 Salvage value, $: 25,000 200,000 Life, years: 10 Infinity