A system administrate wants to add disk3 as a mirrored boot disk Which step must the system administrator perform to allow the mirror copy to boot the server if the primary disk fails?
A. mkboot –a "boot vmunix –q" /dev/rdisk/disk3
B. mkboot a "boot vmunix –lq" /dev/disk/disk3
C. mkboot –a "hoot vmunix –q" /dev/disk/disk3
D. mkboot -a "boot vmunix -lq" /dev/rdisk/disk3