3) ACME Corporation intends for the company to use the newest and finest equipment in its research & development labs to prevent "occasional" failure. Accordingly, a senior engineer has recommended that a 2-year- old piece of equipment be replaced immediately. This engineer believes that the proposed equipment is economically advantageous at a 15% per year return and a planning horizon of 5 years. Perform a replacement analysis using the annual worth method for a s-year study period using the estimates shown below: Defender Challenger Original purchase price, $ Current market value, $ Remaining life, years Estimated value in 5 years, $ Salvage value after 15 years, $ AOC, $ per year 30,000 -40,000 15,000 15 10,000 5,000 -3,000 7,000 -8,000