The critical path for the network activities shown below is with duration Immediate Activity Duration Predecessors A 2 B 4 C 6 AB D 1 A,B 2 B.C.D O E B-C-E; 12 O B. B-E; 6 O C. B-D-E; 7 O D. A-C-E; 10 O A. A-D-E; 5