You need to design an access control strategy that meets business and security requirements, whilst ensuring that your solution minimize forest-wide replication.
What should you do?

A.
A global group per department and a global group per location must be created.
Add users to their respective departmental groups as members.
Place the departmental global groups within the location global groups.
Assign the location global groups to file and printer resources in their respective domains, and then use the location global groups to assign permissions for the file and printer resources.

B.
A global group per department must be created. Add users in their respective global groups.
Create domain local groups for file and printer resources.
Add the global groups to the respective domain local groups.
Then use the domain local groups to assign permissions to the file and printer resources.

C.
A local group on each server must be created.
Then add the authorized users as members.
The use the local groups to assign appropriate permissions for the file and printer resources.

D.
Create A universal group per location must be created.
Then add the respective users as members.
Assign the universal groups to file and printer resources.
Then use the universal groups to assign permissions.