You are the network administrator for The network consists of a single Active Directory domain All network servers run Windows Server 2003. TestKing operates offices in London, Paris, and Amsterdam. Each office is configured as a separate Active Directory site. Each office has a file server for local users. ChiFile is the file server in London. It hosts a shared folder. Users report that they can no longer connect to the shared folder. A help desk technician who is a member of the Power Users group reports that he cannot connect to ChiFile. However, you are able to make a successful connection with ChiFile by using Terminal Services. How should you solve this problem?（）

• A、Add Windows Server 2003 licenses to the Site License server for London.
• B、Change the licensing mode on ChiFile from Per Device or User to Per Server.
• C、Change the licensing mode on ChiFile from Per Server to Per Device or User.
• D、Install a Terminal Services Enterprise license server on the London domain controller