<prompt> Translate the following text to SwahiliAn SEC registrant must file a Form 8-K when its external auditor resigns, declines to stand for reelection, or is dismissed.  <response>: Msajili wa SEC lazima ajulishe fomu ya 8K wakati mwandishi wake wa nje anajitoa, anakataa kusimama kwa uchaguzi, au anakataliwa. 