JADO Mfg. is trying to decide which one of two machines to purchase. Machine A costs $421,000, has a 5-year life, and requires $108,000 in pretax annual operating costs. Machine B costs $589,000, has a 4-year life, and requires $92,000 in pretax annual operating costs. Either machine will be depreciated using the straight-line method to zero over its life. Neither machine will have any salvage value. Whichever machine is selected, it will never be replaced. The discount rate is 13 percent and the tax rate is 35 percent. Which machine should be purchased and why?