Normal Crash Normal Crash Project management word problem 1 duration cost cost Activity Precedent (days) (days) [PHP (PHP) A 120 100 12000 14000 B 20 15 1800 2800 C B 40 30 16000 22000 D C 30 20 1400 2000 m D 50 40 3600 4800 B 60 45 13500 18000 What is the critical path of the project? O A) B-A-F-E B) B-C-D-E O C) B- F-D-E D) A-B-F-D-E O E) A-B-C-D-E