Consider the below project information for the questions 6-12.

Activity	Immediate Predecessor	Normal Duration (days)	Normal Cost ($)	Crash Duration (days)	Crash Cost ($)
A	---	5	50	3	150
B	---	4	40	2	200
C	B	7	70	5	250
D	A, C	2	20	1	50
E	A, C	5	125	1	525
F	B	10	80	7	290
G	D	7	50	3	250
H	E, F	6	60	3	180

6. Which of the following shows the first activity to crash and the maximum number of days we can crash in the first crash?

1. Crash D by 1 day
2. Crash H by 3 days
3. Crash C by 1 day
4. Crash H by 2 days
5. Crash D and H by 1 day each
6. None of the above (what is your answer?)

7. Which of the following shows the project duration after the first crash with a maximum crash time?

1. 19 days
2. 21 days
3. 22 days
4. 20 days
5. 18 days
6. None of the above (what is your answer?)

8. Which of the following shows the critical activities after the first crash with a maximum crash time?

1. B, C, E, and H
2. B, C, D, and G
3. B, F, and H
4. B, C, D, E, G, and H
5. B, C, D, E, F, G, and H
6. None of the above (what is your answer?)

9. What is the minimum duration and final cost of the project by crashing?

1. 12 days and $1125
2. 11 days and $1565
3. 12 days and $1565
4. 11 days and $1125
5. 12 days and $1895
6. None of the above (what is your answer?)

10. What is the new project cost if project duration is reduced to 11 days by crashing?

1. $1125
2. $1785
3. $1565
4. $1125
5. $1715
6. None of the above (what is your answer?)

11. Which activity does not become a critical activity when the duration of the project is reduced to the minimum duration by crashing?

1. Activity A
2. Activity F
3. Activity G
4. Activity E
5. Activity D
6. None of the above (what is your answer?)

12. Which of the following shows the maximum number of activities we can crash to reduce the duration of the project at most 1 day?

1. 1
2. 2
3. 3
4. 4
5. 5
6. None of the above (what is your answer?)