The following tasks are required to produce widgets. Task Time Immediate (seconds) Predecessor A 30 None B 35 A C 30 A D 35 B 15 с F 65 C G 40 E,F H 25 D.G The linear design below is currently being used to produce widgets. WS 1 WS 2 WS 3 WS 4 A,C,E F B,G D,H 75 65 75 60 Which of the above workstations can process concurrently without violating predecessor relationships? Select one or more: a. Workstation 1 and Workstation 2 can process concurrently b. Workstation 2 and Workstation 3 can process concurrently. c. Workstation 3 and Workstation 4 can process concurrently. d. Workstation 2 and Workstation 4 can process concurrently e. None of above four workstations can process concurrently. E Time left 2:08:02

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