You attempt to unmount a volume using the umount $/$dev$/$sdd$3$ command, but you receive a device is busy error message.

Which of the following strategies will be MOST likely to allow you to unmount the file system? $($Select two.$)$

answer

Use the fscls command to close any open files on the filesystem. Try to unmount again.

Perform a backup of the sdd$3$ device and try to unmount again.

Edit $/$etc$/$fstab and remove the mount. Try unmount again.

Ensure your current working directory is not on the file system, and try to unmount again.

Find and close any open files on the file system, and try to unmount again.