5. Huntsman Associates is considering upgrading its escalator equipment. Machines Erom vendors A and B have the same output} but have different useful lives and operating costs. A's lasts four years while B's lasts three years. The discount rate for the project is l%, and the performance for each type of equipment is the same. Costs are given below: t=1234 A5551515 E 3'1] 12 12 2D Ignoring taxes and depreciation, and assuming that Huntsman plans to operate the machines into the distant future, which vendor should Huntsman Associates choose