please label each section ABC etc

4. Dave Fletcher was able to determine the activity times for constructing his laser scanning machine. Fletcher would like to determine ES, EF, LS, LF, and slack for each activity. The total project completion time and the critical path should also be determined. Here are the activity times: Immediate Predecessor(s) Time Activity (weeks) 7 B 8 Time Activity (weeks) E 5 F 7 G 10 H 6 Immediate Predecessor(s) B C, E DE 0 C D A A 3 a) [4 pts] Compute Dave's earliest start (ES) and earliest finish (EF), latest finish (LF), and latest start (LS) times by filling out the following diagram: C 2 A G | 7 10 D 3 Start End E 5 B H On * Accessibility: Investigate 6 A G 7 10 D 3 3 Start End E 5 B H 8 6 F 7 b) [2 pts] Compute the duration of the whole project. weeks. I c) [2 pts] Compute slack for each activity. Activity Slack A I OTMOQC G d) [2 pts] Identify critical activities