Santana Rey expects sales of Business Solutions's line of computer workstation furniture to equal 300 workstations (at a sales price of $3,600 each) for 2018. The workstations' manufacturing costs include the following. Direct materials Direct labor Variable overhead Fixed overhead 740 per unit $ 310 per unit 90 per unit $19,200 per year The selling expenses related to these workstations follow. Variable selling expenses Fixed selling expenses $35 per unit $3,200 per year Santana is considering how many workstations to produce in 2018. She is confident that she will be able to sell any workstations in her 2018 ending inventory during 2019. However, Santana does not want to overproduce as she does not have sufficient storage space for many more workstations