The activities to complete a project are listed below. a) What is the project duration? b) If you were asked to complete the project in 12 weeks, what activities will you crash and by how much? c) What is the total crashing cost based on (b)? Activity Activity Crash Activity Crash Predecessor 1 Predecessor 2 time time Cost Cost A 4 3 2000 2600 2 2200 2800 3 3 500 500 8 4 2300 2600 B On moOW 6 3 900 1200 A D 3 2 3000 4200 C 4 2 1400 2000 E F