5- Two methods can be used for producing expansion anchors. Method A costs $80,000 initially and will have a $15,000 salvage value after 3 years. The operating cost with this method will be $30,000 per year. Method B will have a first cost of $12,000, an operating cost of $8,000 per year, and a $40,000 salvage value after its 2-year life. At an interest rate of 18% per year, which method should be used? (use either annual worth, present worth or future worth analysis) (10 points)