Project involves 12 activities and the precedence relationship is provided below in brackets. (1) Draw an activity on arrow network to represent the project tasks and their dependence. (2) Calculate the earliest start time and latest completion times for each task. (3) Using two-phase method to find the critical path. Project Activities and Dependence (Activity, Predecessor, Duration) (A -- 7 weeks) (B A 1.5 weeks) (C A 2 weeks) (D B 15 weeks) (E D 3 weeks) (F C 10 weeks) (G D 3 weeks) (H G 1 week) (I F, G 2 weeks) (J I 3 weeks) (K H 1 week) (L J, K 5 weeks)