If duration of activity f is changed to 10 days, then the

If duration of activity f is changed to 10 days, then the critical path for the project is

1. Critical path remains the same and the total duration to complete the project changes to 19 days.
2. Critical path and the total duration to complete the project remains the same.
3. Critical path changes but the total duration tocomplete the project remains the same.
4. Critical path changes and the total duration to complete the project changes to 17 days.

If duration of activity F has changed to 10 days, critical path remains the same and project duration will increase to 19 days.