Which two commands or utilities can help the root user diagnose this problem?

Examine the command and output shown: bash-4.1# 1s 1s: error while loading shared
libraries: libselinux.so.1: cannot open shared object file: No such file or directory No files
have been deleted from your system and you want to determine the c use of the error.
Which two commands or utilities can help the root user diagnose this problem?

A.
dmesg

B.
grep libselinux.so.1 /var/log/message