All passwords and user names to an Ubuntu machine have been lost, and you need root access to that machine. Which of the following will give you root access? (Please choose TWO correct answers.)

A.
Type recover and press Enter at the boot: prompt of an Ubuntu LiveCD.

B.
Enter a grub shell at the grub boot prompt and append rw init=/bin/bash to the boot line.

C.
After the grub boot prompt, press and hold the F8 key as the system boots.

D.
Type rescue and press Enter at the boot: prompt of an Ubuntu LiveCD.