How can a directory be excluded from a mksysb backup（）

• 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.