Which of the following is MOST likely to be the problem?

After properly installing both the sound card and modules, the technician attempted to play an
MP3 file, but no sound was heard. Which of the following is MOST likely to be the problem?

A.
The sound module was not added to the kernel.

B.
The sound card does not support MP3 playback.

C.
The sound card is not on the HCL (Hardware Compatibility List).

D.
The ALSA (Advanced Linux Sound Architecture) sound server was not started.