An application fails to start after a Technology Level upgrade. The application vendor recommends that two filesets upgraded as part of the new Technology Level be rejected. What is the recommended method for performing this task?（）

• A、Run instfix -u to reject the filesets.
• B、Run installp -r to reject the filesets.
• C、Run installp -u to uninstall the filesets.
• D、Restore the system to previous state from the system backup.