20. Given the following information, compute the early, late, and slack times for the project network. Which activities on the critical path have only the start or finish of the activity on the critical path? C Lights 1 G H A Lag 1 Paint Paridn Open Post Prepare Lot Lines Lag 10 2 1 D E F Dig Lay Black Legend Trenches Pipe Fill ES EF Description SL Duration LF Lag 3 Lag 322. Given the network below, compute the early, late, and slack time for each activity. Clearly identify the critical path. Lag 1 D E Build Install Cabinets Cabinets 7 2 A Lag 5 Design B 3 Tear Down F G 3 Install Lag 2 Appliances Inspect C 2 1 Lag 5 Order Legend Appliances ID EF SL Description SL LS Duration LF The solution to this exercise can be found in Appendix One