Two water pumps are being considered for new sanitary sewer systems. Pump A costs $10,000 new, will cost $400 per year to operate, and has a salvage value at the end of ten years of $2,500. Pump B costs $6,500 new, costs $800 per year to operate, and has a salvage value at the end of ten years of $500. Using an interest rate of 6.0 percent per year, compounded annually, use each of the three methods below to compare the two pumps and recommend which pump should be purchased. Use Present Value analysis