You are the desktop administrator for your company's sales department. The IT manager for the sales department needs to distribute three custom applications to the department's Windows XP Professional computers. She deploys these applications by using Group Policy. Some users report that they must log on several times before the newly deployed applications are present on their computers. You need to ensure that all software is deployed the next time the users log on. What should you do?（）

• A、Enable the Always wait for the network at computer startup and logon policy.
• B、Enable the Always use classic logon policy. 
• C、Enable the Turn off background refresh of Group Policy policy.
• D、Enable the Group Policy slow link detection policy.