A system administrator has added a new graphics card to the system and rebooted. The system pauses with C31 in the three-digit displays. Which of the following causes could be the reason for the hang?（）
All filesets for CDE have not been loaded. Boot into maintenance mode and load them through SMI
B. There is a missing device driver, incorrect console configuration, or a serial device plugged into native S1 port.
C. The new graphics adapter card is marked defined, not available. Rum smit cfgmgr (Install/Configure Devices Added After IPL with the INPUT device /directory for software set to none). This will reconfigure all devices by walking the bus.
D. The LED C31 means that there is a corrupted /dev/hd5. Boot into maintenance mode, fsck /dev/hd5 and then issue the bosboot command.
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