The critical path for the network activities shown below is __ with duration Immediate Predecessors Activity B mon 00 Duration 10 8 5 4 5 D E O A. A-D-E: 19 A B,C,D O B. A-B-C-D-E: 29 O C. A-C-E: 20 O D. B-E 13 O E. A-CE: 18