All of the following classes of errors are logged in the error report EXCEPT（）.

AnAIXsystemadministratorhassetupdiskquotas.Wherecanthereportsbefoundonthesystem?（）

A./var/adm/acct/sum 
B./var/adm/ras 
C./usr/sbin/acct 
D./var/adm/wtmp

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