Your network contains an Active Directory domain named contoso.com. The domain contains more than
100 Group Policy objects (GPOs). Currently, there are no enforced GPOs.You need to prevent all of the GPOs at the site level and at the domain level from being Applied to users
and computers in an organizational unit (OU) named OU1.
You want to achieve this goal by using the minimum amount of administrative effort.
What should you use?

A.
Dcgpofix

B.
Get-GPOReport

C.
Gpfixup

D.
Gpresult

E.
Gptedit.msc

F.
Import-GPO

G.
Restore-GPO

H.
Set-GPInheritance

I.
Set-GPLink

J.
Set-GPPermission
K.
Gpupdate
L.
Add-ADGroupMember

Explanation:
http://technet.microsoft.com/en-us/library/ee461032.aspx