A compary is considering purchasing factory equipment that costs $400000 and is estimated to have no salvage value at the end of its 5-year useful life. If the equipment is purchased, annual revenues are expected to be $158000 and annual operating expenses exclusive of depreciation expense are expected to be $21000. The straight-line method of depreciation would be used. If the equipment is purchased, the annual rate of return expected on this equipment is 28.50% 34.25%. 6.85%. 39.50%