How does the Play Across Slides check box in the Audio Options group differ from the Loop Until Stopped check box?

A) Play Across Slides doesn't let you choose the number of slides to play the audio; the Loop Until Stopped option does.
B) Play Across Slides lets you choose up to 10 slide for the audio to play across; the Loop Until Stopped option allows an unlimited number of slides.
C) Play Across Slides lets you set the number of slides during which you wish the audio to play; the Loop Until Stopped option does not.
D) Play Across Slides allows you to choose two or more sounds to play simultaneously; the Loop Until Stopped option only allows you to play one over and over again.

A