Your network contains a server named Server1 that runs Windows Server 2008 R2. The network contains multiple subnets.An administrator reports that Server1 fails to communicate with computers on remote subnets.You run route.exe print on Server1 as shown in the exhibit. (Click the Exhibit button.)You need to ensure that Server1 can communicate with all computers on the network. What should you do？（）

• A、Disable IPv6.
• B、Change the subnet mask.
• C、Add a default gateway address.
• D、Change the default metric to 100.