Task ID Predecessors Normal Time Maximum Crash Time Normal Cost Crash Cost (Slope) 1 - 5 1 50 20
2 - 3 2 60 60
3 1 4 0 70 0
4 1 2 1 50 10
5 2 5 3 100 60
6 3 2 1 90 100
7 4 5 1 50 30
8 5 2 0 60 40
9 6,7,8 3 1 200 200
Consider the project above. If the indirect costs of the project are: $90 at 15 days, $75 at 14 days, $50 at 13 days, $40 at 12 days, and $30 at 11 days.
Please help crash this project in a manner that minimizes the sum of the total direct and indirect costs.
What is the current estimated project duration in days without any crashing?
A. 11
B. 14
C. 13
D. 15