Consider the following information about a small project:

Task

Duration $($days$)$

Immediate Predecessors

Shortest Time Possible

Acceleration Cost per day

A

$5$

None

$4$

$$6,500$

B

$10$

A

$9$

$$5,000$

C

$8$

A

$7$

$$7,000$

D

$6$

B

$3$

$$6,000$

E

$7$

C

$6$

$$6,000$

F

$3$

C

$2$

$$7,000$

G

$4$

D$,$E$,$F Question $6$ What is the critical path by forward and backward paths? $($Only put letters, do not leave space in your answers. For example, if your answer is A to C to E and to G$,$ put down ACEG in the blank.$)$

ANSWER :ABDG $($CORRECT ANSWER$)$ Question $7$ The duration of the project is $\_\_\_\_$ days. $($Integer answer, only put numbers, do not put anything else$)$

ANSWER : $25($CORRECT ANSWER$)$ Question $8$ For the tasks that are not on the critical path, task $\_\_\_\_$ has the longest slack. $($Only put letters, do not put anything else$)$

ANSWER : C $($WRONG ANSWER$)$ Question $9$ Following the previous question, the task with the longest slack has a slack of $\_\_\_\_$ days. $($Integer answer, only put numbers, do not put anything else$)$

ANSWER : $2($WRONG ANSWER$)$ I wrote the wrong questions, can you solve them again?