You want to configure your Windows 2000 Professional portable computer to use offline files. The files that you want to access offline include a large project file and some smaller personal files. Your portable computer is configured to connect to the network by using the dial up connection at scheduled times during day to automatically download your e-mail messages. You do not want to synchronize the project file when you connect to the network using the dial-up connection. What you should do?（）

• A、Configure the Synchronization Settings to perform a quick synchronization. 
• B、Configure the Synchronization Settings to ask you before synchronizing items. 
• C、Configure the Synchronization Settings to synchronize the project file only when using the LAN connection. Set synchronization for the personal files for both the LAN connection and your dial-up connection. 
• D、Set the synchronization settings to synchronize the project file only when you log off the network. Set synchronization for the personnel files for both the LAN and dialup connection for logging on and logging off.