Refer to the Process Flow Diagram 2 for Making a Shirt, with an Additional Worker. Consider only task D, ironing. If an additional ironing worker were hired so that there were three workers working in parallel, what would be the minimum cycle time for the ironing task? Assume that the new worker is identical in capacity to the existing two. 1) 12 minutes/unit 2) 6 minutes/unit 3) 4 minutes/unit 4) 2 minutes/unit Process Flow Diagram 2 for Making a Shirt, with an Additional Worker All steps (A, B, C, D, and E) in the below process are necessary to create each finished unit. Task times are shown for each step. A second worker has been hired to duplicate task D. Now shirts that have been through task C go to any one of the two workers on task D. The product still requires the five steps (A, B, C, D, E). Prepare front A 5 mins./unit Prepare back B 10 mins /unit Stitch front and back C 4mins /unit tron D 12 mins.unit tron D 12 mins. Aunit Pack I E 5 mins unit