What must you do to rename the testdg disk group to engdg from the command line?

A.
Destroy the disk group and then re-create the disk group using the new name.

B.
Use the vxdg change command, which performs a deport and an import in a single step.

C.
Use vxdg deport followed by vxdg import; the volumes are automatically started in the
disk group after the import.

D.
Use vxdg deport followed by vxdg import and then manually start volumes in the disk
group by using the vxvol command.