Which of the following commands can be used to change both the owner AND group settings of a file?

chmod modifies the permission bits (read, write, execute) of a file but has no ability to alter ownership or group assignment.

chage modifies user account password aging policies such as expiry dates and warning periods - it operates on user accounts, not file metadata.

chuser is not a standard Linux command and does not exist in common Linux distributions.

chown accepts the syntax 'chown owner:group filename', where specifying a colon-separated pair updates both the owning user and the owning group atomically in one command, which no other listed tool can do.

chgrp changes only the group ownership of a file and cannot change the owning user, making it insufficient when both must be updated.