Study the diagram and answer the question below. George was initiating a client authentication session by beginning an HTTP session on port 259 with the gateway named london as shown. What do you think might be wrong with the address George specified in the browser?

A.
The user should use Session Authentication method to successfully connect to the destination server.

B.
The user should be able to connect, since he was using the right port.

C.
The user should bypass the firewall at port 259 to connect successfully.

D.
The user was using the wrong port. He needs to use port 900 to connect successfully.

E.
The user should bypass the firewall at port 900 to connect successfully.