Which command will cause the file to be uncompressed and the tar file extracted, while keeping the original file unchanged?

You have received a file called data.tar.Z Which command will cause the file to be uncompressed
and the tar file extracted, while keeping the original file unchanged?

A.
uncompress data.tar.Z;tar xvf data.tar

B.
gunzip data.tar.Z;tar xvf data.tar

C.

Explanation: