3. consideration is being given to two plans for supplying water to a plant. Plan A requires a pipeline costing $160,000 with annual operation and upkeep costs of $2200, and an estimated life of 30years with no salvge. Plan B requires a flume costing $34000 with a life of 10 years, a salvage value of $5600, and annual operation and upkeep of $4500 plus a ditch costing $58000, with a life of 30 yers and annual costs for upkeep of $2500. Using an interest rate of 12 percent, compare the net present values of the two alternatives.