What is the ES for Activity E? What is the LF for Activity F? What is the slack for the start of Activity C? What is the slack for the start of Activity 1? What is the slack for the end of Activity 1? What is the length of the project? {time periods. Given the following information, compute the early, late, and slack times for the project network. ID Task Duration Predecessor Additional Lag Relationships Lag A Post Signs CO Prepare Site Finish-start A to B 9 Lights Dig Trenches Lay Pipe Start - start D to E NW Back Fill Start - start E to F Pave UHION Paint Parking Lines NWWIP Finish-start G to H 3 Signage Open Lot C, H, I 5 ID Task A Post Signs A B H 2 Prepare Site ights Lag 9 Lag 13 3 D Dig Trenches Lay Pipe D F G Back Fil G Pave 5 Paint Parking Lines Signage Lag 3 Lag 2 Open Lot