You ran out of space and added a eighth disk to your SCSI-1 system. When you try to start， the system no longer boots. What is most likely the cause of this problem？（）

• A、 SCSI-1 supports only 8 devices including the adaptor.
• B、 SCSI-1 supports only 6 disks per adaptor.
• C、 There is a SCSI-ID conflict that causes that problem.
• D、 You forgot to set the SCSI-ID #8 for the new disk.