Information about the activities of a project is provided below.
| Activity |
Predecessor |
Normal time (weeks) |
Crash Time (weeks) |
Normal Cost |
Crash Cost |
| a |
none |
6 |
5 |
$9,000 |
$10,000 |
| b |
none |
8 |
6 |
$3,000 |
$4,000 |
| c |
none |
4 |
3 |
$5,000 |
$6,200 |
| d |
A,B |
5 |
3 |
$9,000 |
$12,000 |
| e |
C |
8 |
5 |
$10,000 |
$16,000 |
Information about the activities of a project is provided below. Which activity or activities should be crashed to reduce the project duration to 12 weeks?