There are four critical paths in a network. A-B-C-D-E, A-F-E, A-B-H-J-K-E and A-S-T-E. Each activity in this network can be crashed by a maximum of 6 weeks. The crashing cost (per week), for the first week (crashing first time), for activity A is: $460, E is $475 and all other activities is : $115 (per week per activity). The crashing cost, second week and onwards(crashing second time), for activity A is $1150 per week, E is $1380 per week and for all other activities is $230 per activity per week. You have a maximum crashing budget of $2880. The maximum possible reduction in the project duration will be: O a. 2 week O b. 6 weeks O c. 5 weeks O d. 4 weeks O e. 3 weeks