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 6 B Prepare Site 4 A Finish-start A to B 10 C Lights 5 B D Dig Trenches 4 B E Lay Pipe 4 D Start-start D to E 2 F Back Fill 3 E Start-start E to F 2 G Pave 3 F H Paint Parking Lines 2 G Finish-start G to H 3 I Signage 3 G J Open Lot 2 C, H, I ID Task A Post Signs B Prepare Site C Lights 6 Lag 10 4 D Dig Trenches E Lay Pipe F Back Fill G Pave H Paint Parking Lines K Signage Open Lot What is the ES for Activity E? What is the LF for Activity F? What is the slack for the start of Activity C? Lag 2 Lag 2 What is the slack for the start of Activity I? What is the slack for the end of Activity I? What is the length of the project? time periods. C 5 Lag 3 2