单项选择题
Multiple users are trying to telnet to the AIX server. They are able to ping the server successfully， but are getting the following error message：
telnet： connect： A remote host refused an attempted connect operation
Which of the following could be the cause of this problem？（）
A.The routing table on the AIX server is incorrect.
B.The IP address on the network adapter is incorrect.
C.The portmap daemon is not running on the AIX server.
D.The inetd daemon is not running on the AIX server.
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