An administrator assigns the coordinator disks to a cluster, then starts I/O fencing; but the fencing driver displays the following error message:
Which action should the administrator perform to clear the error message and configure the I/O fencing to the local cluster?
A. use the command vxfenswap to replace the coordinator disk group
B. use the command vxfenadm to remove the key
C. use the command vxfenconfig to configure the vxfen driver
D. use the command vxfenclearpre to clear the key