You have a single Active Directory directory service domain. You create organizational units （OUs）  named Corporate and Support. You move the corporate user and computer accounts into the Corporate  OU. You move the accounts of computers in the support department into the Support OU. You need to ensure that users have one screensaver while using computers that are in the Corporate OU， and aseparate screensaver while using computers that are in the Support OU.  What should you do？（）

• A、 Create a new parent OU for the Corporate and Support OUs and name the parent OU Users. Move all user objects to the Users OU， and then create and link a Group Policy object （GPO） with the screensaver setting to the Users OU.
• B、 Create and link a Group Policy object （GPO） with the screensaver setting to the Support OU and select the Block Inheritance option.
• C、 Create and link a Group Policy object （GPO） with the screensaver setting to the Corporate OU， create and link a GPO with the screensaver setting to the Support OU， and then enable loopback processing in Replace mode on the Support OUs GPO.
• D、 Create and link a Group Policy object （GPO） with the screensaver setting to the Support OU and select the Enforced option.