An administrator issued a command to update the firmware of an Ethernet adapter on a partitioned system， but received an error. What is the most likely cause of the problem？（）

• A、The adapter must be taken offline prior to the firmware update.
• B、The system has not been rebooted since the adapter was added to the LPAR.
• C、The adapter must be assigned to the service partition prior to updating the firmware.
• D、The adapter must be dynamically removed from the LPAR prior to updating the firmware.