Process Flow Diagram for Making a Shirt that has one worker working at each of the five process steps. Process Diagram with Steps A and B, both Squares, occurring at the same time. Step A, prepare front, takes 5 minutes per unit. Step B, prepare back, takes 10 minutes per unit. Both lead to a triangle, which then leads to step C, stitch front and back, a square that takes 4 minutes per unit. Step D, iron, a square that takes 12 minutes per unit. Last, step E, pack, a square that takes 5 minutes per unit. Now, let us add an additional worker at process step D. With this change, if the entire system (all processes) is operating at full capacity, what is the system's cycle time? Question 18 options: 4 minutes/unit 12 minutes/unit 10 minutes/unit 5 minutes/unnit