<prompt> Statement not true about rigor mois isAppears immediately after deathAffects both voluntary and involuntary musclesIndicates time since deathResults from fusion of action and myosin filaments  <response>: First appears in involuntary muscles within an hour due to less mass and less glycogen reserve. Involuntary muscles, begins 2-4 hours after death. Persists for about 12 hours and then begins to disappear Takes 12-24 hours to disappear completely 