While using the smit install_remove menus to remove some filesets the system administrator notices the /usr filesystem is now unnecessarily large. Which of the following actions will reduce the size of the /usr filesystem?()
- ABackup, unmount, remove, recreate and restore the filesystem.
- BBoot from mksysb tape and select Shrink filesystems on restore.
- CUnmount, run defragfs /usr and the reducefs -size XXX /usr commands.
- DUpdate /etc/filesystems with the desired size for /usr and reboot the system.