Hagar Industrial Systems Company (HISC) is trying to decide between two different conveyor belt systems. System A costs $280,000, has a four-year life, and requires $85,000 in pretax annual operating costs. System B costs $396,000, has a six-year life, and requires $79,000 in pretax annual operating costs. Both systems are to be depreciated straight-line to zero over their lives and will have zero salvage value. HISC always needs a conveyor belt system; when one wears out, it must be replaced. Assume the tax rate is 35 percent and the discount rate is 9 percent.