Recently, the development agency of the audio format MP3 stopped issuing MP3 licenses. Some people believe that the MP3 format has been officially "killed". In the audio file format, the MP3 format will be replaced by the AAC format and will exit the stage of history. If the following are true, which of the following is most rebuttable is the following:. ['AAC does have better music quality than MP3, but the difference is only significant at low bit rates.', "AAC format is protected by patents, and AAC's market share is limited due to the need to pay royalties.", 'MP3 format music files cannot be recognized and played in some emerging music players.', 'The D. MP3 compression technology patent has recently expired, and the statement of the development agency merely declared the end of the licensing project.']