Required information An electric switch manufacturing company is trying to decide between three different assembly methods. Method A has an estimated first cost of $41,000, an annual operating cost (AOC) of $13,000, and a service life of 2 years. Method B will cost $82,000 to buy and will have an AOC of $4,500 over its 4-year service life. Method C costs $117,000 initially with an AOC of $4,500 over its 8 -year life. Methods A and B will have no salvage value, but Method C will have equipment worth 9% of its first cost. form a future worth analysis to select the method at i=8% per year