sells for $70 but needs $20 of materials and $15 of labor to produce; Product B sells for $55 but needs $25 of materials and $10 of labor to produce; Product C sells for $80 but needs $35 of materials and $15 of labor to produce; Product D sells for $75 but needs $35 of materials and $15 of labor to produce. The processing requirements for each product on each of the four machines are shown in the table. Processing Time (min/unit) Work CenterABCD W5375 X7664 Y10558 Z6653 Work centers W, X, Y, and Z are available for 40 hours per week and have no setup time when switching between products. Market demand for each product is 100 units per week. In the questions that follow, the traditional method refers to maximizing the contribution margin per unit for each product, and the bottleneck method refers to maximizing the contribution margin per minute at the bottleneck for each product. Use the information in Table 6.1. Using the bottleneck method, what is the optimal product mix (consider variable costs only–overhead is not included in this profit calculation)? Group of answer choices 75 A, 100B, 50C, 100 D 100A, 50B, 100C, 100D 100A, 100B, 60C, 100D 100A, 100B, 100C, 50D