Which of the following is NOT true about including audio files in presentations?

A) If the audio file is too long, you should select a new audio file.
B) You can set the audio to play across slides so a background song continues to play as the user advances the slides.
C) Audio can be looped so it continues to play until it is stopped.
D) The audio file can be set to fade in at the beginning of the playback and fade out at the end.

A