A new server was installed. Most clients are located in the same subnet as the server and can successfully access the server. Clients located on different subnets have been unable to access the server, but have no trouble accessing other servers on their subnet. Which of the following is the reason that these clients are unable to access the server?（）

A、DHCP has assigned the wrong addresses.

B、Incorrect default gateway on the server.

C、DNS entries were not created.

D、WINS server is not responding.

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