Most Normal Crash Activity Predecessor || Likely Optimistic Pessimistic Cost Cost A 5 3 8 00 400 800 B 7 5 11 600 900 C 5 LO 3 8 300 700 D A 10 7 15 800 1100 | E B 6 3 10 500 900 F A,C 8 4 12 1000 1500 G B 4 4 4 500 500 H E, F 7 7 7 800 800 || E,F,D 4 2 8 400 700 J H 6 3 9 600 1200