Letang Industrial Systems Company (LISC) is trying to decide between two different conveyor belt systems. System A costs $275,000, has a four-year life, and requires $81,000 in pretax annual operating costs. System B costs $355,000, has a six-year life, and requires $75,000 in pretax annual operating costs. Suppose the company always needs a conveyor belt system; when one wears out, it must be replaced. Assume the tax rate is 22 percent and the discount rate is 9 percent. Calculate the EAC for both conveyor belt systems. (A negative answer should be indicated by a minus sign. Do not round intermediate calculations and round your answers to 2 decimal places, e.g.,32.16.) System A System B Which conveyor belt system should the firm choose? System A System B