During a boot, which of the following procedures is most likely to present a menu that prompts the user to copy a dump?（）

• A、 Set the dump device to /dev/hd6. 
• B、 Run sysdumpdev to set the force copy flag for dump to true. 
• C、 Run sysdumpdev to set the force copy flag for dump to false. 
• D、 Increase space in the /tmp directory.