If You Were Thinking About a Home Theater System Which

If you were thinking about a home theater system which of the following represents the feedback?

A) The DVD player,DVD movie,speakers,TV,and electricity.
B) Playing the movie including the audio through the speakers and the video on the TV.
C) A message stating that the disk is dirty and cannot be played.
D) Spinning the disk to play,pause,rewind,or fast forwarD.