What is the default local location for syslog and trace files?（）

A./var/syslog-file
B./var/syslog
C./var/log/messages
D./log-file

A.A different login class must be configured for each user.
B.Individual commands can be explicitly allowed or denied.
C.A user must be assigned to one of the default login classes.
D.Each login class is associated with one or more permissions flags.

A.Permissions are configured individually for each user.
B.Users are associated with user classes, and each class defines the permissions for entering commands.
C.There are four default classes with different permissions and you can only use these four.
D.Permissions are associated with each user ID