26. Using the information shown in the below table, a (a) Show the AOE network. (b) obtain the early, el ), and late l(), start times for activities D and F by using the forward-backward approach. (c) what is the earliest time the project can finish? (d) which activities are critical? (e) Is there any single activity whose speed up would result in a reduction of the project length? Predecessor Activity A B D E F G Time (Days) 2 5 1 10 3 6 8 B AD E.F