Give user right to backup DC

Hi

I encountered this question online. I am unsure which is the correct answer.

You have a Group Policy object (GPO) named DomainPolicy that is linked to the domain and a GPO named DCPolicy that is linked to the Domain Controllers organizational unit (OU).
You need to ensure that the members of the Backup Operators group can back up domain controllers. What should you do?

A. From the Computer Configuration node of DCPolicy, modify Security Settings.
B. From the Computer Configuration node of DomainPolicy, modify Security Settings.
C. From the Computer Configuration node of DomainPolicy, modify Administrative Templates.
D. From the User Configuration node of DCPolicy, modify Security Settings.
E. From the User Configuration node of DomainPolicy, modify Folder Redirection.
F. From user Configuration node of DomainPolicy, modify Administrative Templates.
G. From Preferences in the User Configuration node of DomainPolicy, modify Windows Settings.
H. From Preferences in the Computer Configuration node of DomainPolicy, modify Windows Settings.

Thanks in advance