What Does the Following Command Do? Tar -Czvf /Tmp/backup

What does the following command do? tar -czvf /tmp/backup.tgz /etc/HOSTNAME

A) It extracts the /etc/HOSTNAME file from the /tmp/backup.tgz archive.
B) It includes the /etc/HOSTNAME file in the newly created /tmp/backup.tgz archive.
C) It produces an error message because the options are in the wrong sequence.
D) It displays a line similar to the following, but otherwise does nothing: -rw-r--r-- root/root 23 2005-03-11 14:20 etc/HOSTNAME