Consider the following Activity-On-Edge Network: start a = 5 0 =6 3 a = 4 a=3 a = 6 D a = 1 a = 3 a10=4 1) What are early start times, e (), for each activity? a = 4 2) What are late start times, / (), for each activity? 5 7 a=5 11=4 8 a=2 a=2 9 finish e[1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] 1[1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] 3) What is the earliest time the project can finish? 4) Which activities are critical? 5) What are the single activities whose speed-up would result in a reduction of the project length?