Servers in your environment run Windows Server 2003. You plan to configure a highly available file server. You need to choose the appropriate high-availability technology and the minimum Windows Server 2003 edition for this server.  Which technology and edition should you choose？（）

• A、 failover clustering
• B、 Network Load Balancing
• C、 Windows Server 2003， Standard Edition
• D、 Windows Server 2003， Enterprise Edition