During your routine system maintenance, you need to create an archive of the /var/log directory to preserve the system logs before clearing them for the new fiscal year. You decide to use the tar command to create a compressed archive. Which of the following commands correctly creates a gzip compressed archive of the /var/log directory named system_logs.tar.gz?
tar -czvf system_logs.tar.gz /var/log
tar cvzf /var/log > system_logs.tar.gz
tar -rvf system_logs.tar.gz /var/log
tar -cv system_logs.tar.gz /var/log