The following table of probabilistic time estimates (in weeks) and activity predecessors are provided for a project. Activity optimistic most likely pessimistic time Activity Predecessor A B C D E Table 1 time time 3 5 7 4 8 10 A 2 3 5 A 6 9 12 B, C 5 9 15 D Reference Ref 1 Using Table 1, the critical path for the project consists of activities O A. A-B-C-D. O B. A-B-C-E OC.A-B-D-E OD.A-B-C-D-E