Your company has four regional offices. You install the Windows Deployment Services (WDS) role on the network.
Your company creates three images for each office. There are a total of 12 images for the company.
The images will be used as standard images for workstations.
You deploy the images by using WDS.
You need to ensure that each administrator can view only the images for his or her regional office.
What should you do?

A.
Create a global group for each regional office and place the computers in the appropriate global group.

B.
Create an organizational unit (OU) for each regional office and place the computers in the appropriate OU.

C.
Place all images into a single image group on the WDS server. Grant each administrator permissions to the image group.

D.
Place each regional office into a separate image group on the WDS server. Grant each administrator permissions to his or her regional office’s image group.

Explanation:
image group: Each image group has a unique name and an ACL to specify users who are allowed to deploy OS images from the image group. An image group may contain multiple OS image containers.
Source: http://msdn.microsoft.com/en-us/library/dd891274%28v=prot.10%29.aspx