Vista Company manufactures electronic equipment. In 2021, it purchased from an outside supplier the special switches used in each of its products. The supplier charged Vista $2.60 per switch As an alternative Vista's CEO considered purchasing either machine A on machine B so the company could manufacture its own switches. The CEO decided at the beginning of 2022 to purchase machine A. based on the following data: Annual fixed cost (depreciation) Variable cost per switch Machine A $ 141,000 0.60 Machine 5 $ 210,000 0.25 Assume that machine A has already been purchased. At what annual volume level should Vista consider replacing machine A with machine B? (Do not round intermediate calculations. Round your final answer up to the nearest whole number.) Volume level units (per year)