An administrator needs to be able to restore a mksysb created on SERVER_A using a 4MM tape drive， to SERVER_B that only has an 8MM tape drive. There is an additional server that has a  4MM drive at /dev/rmt0 and an 8MM drive at /dev/rmt1.  Which of the following procedures should be followed to convert from the 4MM to 8MM format（）

• A、tcopy /dev/rmt0.1 /dev/rmt1.1
• B、dd if=/dev/rmt0.1 of=/dev/rmt1.1
• C、tar -xvf /dev/rmt0.1tar -cvf /dev/rmt1.1
• D、cpio -ivcBDUM < /dev/rmt0.1cpio -ovcBDUM. >/dev/rmt1.1