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 $100,000 with $3,500 salvage value after 16 years. The other can be purchased and installed for $105,000 with $5,000 salvage value after 16 years. Operation and maintenance for each is expected to be $17,000 and $15,500 per year, respectively. The granary uses MACRS-GDS depreciation, has a marginal tax rate of 40%, and has a MARR of 9% after taxes. Determine which alternative is less costly, based upon comparison of after-tax annual worth.