Which of the following scheduling rules are global priority rules?

A$.$ earliest due date and shortest processing time

B$.$ shortest processing time and slack per remaining operations

C$.$ earliest due date and slack per remaining operations

D$.$ critical ratio and slack per remaining operations

E$.$ none of the above

QUESTION $8$

Job $A$ is due on day $15,$ and it is finished on day $12.$ What is its lateness?

A$.-3$

B$.0$

C$.3$

D$.$ both $-3$ and $3$

E$.$ none of these answer choices are correct

QUESTION $9$

If the schedule shows a $5$ day slack between the end of Task A and start of Task B$,$ this means:

A$.$ you must start Task B as soon as Task A ends.

B$.$ Task B start is late.

C$.$ Task B start can be delayed up to $5$ days after Task A$\text{'}$s scheduled completion.

D$.$ Task $A$ is taking longer to complete.

E$.$ Task A and Task B should be performed concurrently.