Consider the following information about a small project: Task A B C D E F Duration Estimates 2 days 3 days 4 days 3 days 3 days 9 days Immediate Predecessors None A B A B & D E & C ? Click here for the Excel Data File b-1. Identify the critical path. A-B-C-F A-B-E-F. O A-D-E-F b-2. Identify the earliest start and finish, and slack for each task. (Leave no cells blank - be certain to enter "O" wherever required.) Task Immediate Predecessors None Earliest Start (ES) Earliest Completion (EC) A B A B D E BD F CE Task Latest Completion Latest Start (LS) Immediate Successors None Slack F E F D E F B C, E BD A c. Which of these activities should the project manager track most closely? A-B-C-F O A-B-E-F A-D-E-F