Cer-tech .com has an Active Directory domain. It has Terminal services installed on the Windows Server2008 computers in the domain. All client machines have Windows Vista as their operating system. Due to anature of work， users are required to view some training videos on Windows Media Player 11 duringTerminal Services session. What should you do to ensure that the users could run Windows Media Player11 during the Terminal services session？（）

• A、On the terminal server， install the Quality Audio Video feature.
• B、Open the Terminal server settings and enable the ’allow desktop applications to run on session’. Disablethe default settings
• C、Install and configure the Desktop Experience feature on the terminal server
• D、Create a group policy object that allows Windows Media Player 11 to set the differential services codepoint value to 10 and apply the policy to the client machines that want to use Windows Media Player 11