How can a directory be excluded from a mksysb backup of the following？（）

• A、Put an entry in the /etc/exclude.rootvg file
• B、Put an entry in the /etc/mksysb.exclude file
• C、Remove the directory’s entry from the mksysb /image.data file
• D、Remove the directory’s entry from the /var/adm/ras/bosinst.data file