A project management problem is identified with activities, predecessors, mean activity durations (in weeks), the variance of activity durations, crashing costs per week ($ per week) and maximum possible crash weeks are identified as below. Crashing cost Mean duration Variance Maximum Activity Predecessors per week crash weeks (u) (02) ($ per week) A 3 1 B A 5 1 200 ww A 6 1 300 D B, C 7 2 400 1 E B, D 9 3 3 600 1 F C, D 3 1 100 3 G D, E, F 8 2 500 1 Question 23 1 pts What is the value of Late Start for activity B? 8 o 4 3 9 Question 24 1 pts What is the sum of slack for all the activities? O 7 O 1 0 O 6 O 13 Question 25 1 pts What is the length of the critical path in weeks? 36 O 33 23 30 O 25 Question 26 1 pts What is the length of the critical path if the activity "F" is delayed by 3 weeks? O 26 28 33 O 39 O 36 Question 27 2 pts You are asked to crash the project duration by 3 weeks in the least expensive way? What do you think is the sequence of crashes and the cost incurred in crashing? FBC, $600 FFF, $300 OCDE, $1300 O CCD, $1000 O CDG, $1200