单选题
A It is a list of remote database links stored in the XML file that are available to the users of the database.
B It is a list of users and network privileges stored in the XML file according to which a group of users can connect to one or more hosts.
C It is a list of users and network privileges stored in the data dictionary according to which a group of users can connect to one or more hosts.
D It is the list of the host names or the IP addresses stored in the data dictionary that can connect to your database through PL/SQL network utility packages such as UTL_TCP.
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