Fill the table below using the Activity-on-Arrow (A-o-A) network given and answer the questions. (Arrows between Node 2 & 4, Node 3 & 4. Node 8 & 9 are dummy activities) D 3 6 5 E B + G 6 3 H K 3 EST EFT LST LFT TE FF IF Activity Duration (days) 3 B 4 C 4 D 5 E 3 F 5 G 6 H 5 I 6 J 4 K 3 L 5 a) What is the total project duration? b) Identify the critical path(s). c) If the activity D is delayed by 4 days and activity Kis delayed by 1 day, how many days will the project be delayed? d) If the activities B and E are delayed by 2 and 1 days respectively, how many days will the project be delayed