A Linux Administrator Needs to Back Up the Folder /Usr/domain

Multiple Choice

A Linux administrator needs to back up the folder /usr/domain , and the output must be a gzip compressed tar. Which of the following commands should be used?

A) tar -cv domain.tar.gz /usr/domain
B) tar -cvf /usr/domain domain.tar.gz
C) tar -czvf domain.tar.gz /usr/domain
D) tar -cxzv /usr/domain domain.tar.gz