Your network contains a single Active Directory domain named contoso.com. The domain contains two servers named Server1 and Server2. Server1 and Server2 are namespace servers for the //contoso.com/DFS1 namespace. You need to ensure that users only connect to the //contoso.com/DFS1 namespace on Server1 if Server2 is unavailable. How should you configure the //contoso.com/DFS1 namespace？（）

• A、From the properties of the //contoso.com/DFS1 namespace, modify the referrals settings
• B、From the properties of the //contoso.com/DFS1 namespace, modify the advanced settings
• C、From the properties of the //SERVER1/DFS1 namespace servers entry, modify the advanced settings
• D、From the properties of the //SERVER2/DFS1 namespace servers entry, modify the advanced settings