Which of the following commands can be used to watch system errors as they are logged？（）

A. lslpp -I
B. uname -r
C. oslevel -g
D. rpcinfo -p

A. lslpp -l perfmgr.* ； cd /tmp ； installp -ld
B. smitty list_software ； oslevel -g
C. smitty list_software ； lslpp -f perfmgr*
D. cd /usr/sys/install.images ； ls -la ； cd /tmp ； ls -la