Tanek Industries manufactures and sells three different models of wet-dry shop vacuum cleaners. Although the shop vacs vary in terms of quality and features, all are good sellers. Tanek is currently operating at full capacity with limited machine time. Sales and production information relevant to each model follows. Product Economy Standard Deluxe Selling price $40 $67 $134 Variable costs and expenses $21 $27 $62 Machine hours required 0.5 0.8 1.6 Calculate contribution margin per unit. Economy Contribution margin per unit eTextbook and Media Question Part Score to Product Standard 1A Ignoring the machine time constraint, which single product should Tanek Industries produce? Deluxe --/0.75