Why doesn’t your LiveCD work?

You would like to use a LiveCD to assist with hard drive diagnostics. The LiveCD is in the CD-ROM drive, but the system boots the normal hard drive operating system when powering up. What’s the most likely reason that the LiveCD doesn’t work?

A) The BIOS must be configured to boot from the CD-ROM drive

B) The LiveCD contains an incompatible operating system

C) The CD-ROM hardware doesn’t support a bootable mode

D) The LiveCD contains an incorrect CD-ROM format