What is the most likely cause?

A legacy PATA disk is used to boot the system. You recently added an internal DVD drive to the computer, and now the system will no longer boot.

What is the most likely cause?
A . The hard drive became corrupt when the DVD drive was installed.
B . The DVD drive is not detected by the computer and needs to be enabled first in the BIOS and then in Linux prior to installation.
C . The hot swap option has not been enabled in the BIO
E . The BIOS has identified the DVD drive as the first disk, and therefore the system can no longer find the Linux partition(s).

Answer: D