Your network contains an Active Directory domain named contoso.com. Domain controllers run either Windows
Server 2008 R2 or Windows Server 2012. All client computers run Windows 8.
Each user has a laptop computer.
You enable Folder Redirection and you configure theRedirect folders on primary computers only Group Policy
setting.
You need to ensure that user folders are redirectedonly when the users log on to their personal laptop
computer.
What should you modify?

A.
The msDS-PrimaryComputer attribute of each computer

B.
The msDS-PrimaryComputer attribute of each user

C.
The msTSPrimaryDesktop attribute of each user

D.
The msTSPrimaryDesktop attribute of each computer

Explanation:
http://www.grouppolicy.biz/2012/03/how-to-configure-a-primary-computer-a-k-a-msds-primarycomputerproperty-in-windows-8/