A granary has two options for a conveyor used in the manufacture of grain for transporting, filling, or emptying. One conveyor can be purchased and installed for $80,000 with $2,500 salvage value after 16 years. The other can be purchased and installed for $105,000 with $2,500 salvage value after 16 years. Operation and maintenance for each is expected to be $17,500 and $11,500 per year, respectively. The granary uses MACRS-GDS depreciation, has a marginal tax rate of 40%, and has a MARR of 9% after taxes. Part a Determine which alternative is less costly, based upon comparison of after-tax annual worth. Show the AW values used to make your decision: Conveyor 1: $ Conveyor 2: $