<prompt> True about Rigor mortis:Does not occur in fetus less than 7 monthsInvolves voluntary muscles onlyLasts for 12 - 24 hours in summerStarts in chin  <response>: Ans. A. Does not occur in fetus less than 7 monthsRigor mortis involves both voluntary and involuntary muscles, earlier in involuntary muscles.Rigor mortis is not seen inRigor mortis is tested byFetus 7 monthsQHeat stiffeningQEmbalmingQTrying to lift eyelidsLowering the jawBending neck thighsInstrument:Electromyogram 