A system administrator has an application that has the data in volume group appvg. Which of the following commands will back up the contents of appvg to the tape in /dev/rmt0 and check for any read errors？（）

• A、savevg -mf /dev/rmt0 appvg
• B、savevg -cvf /dev/rmt0 appvg
• C、savevg -xvf /dev/rmt0 appvg
• D、savevg -f /dev/rmt0 -V appvg