This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Thanatology, Subject name: Forensic Medicine
[{'content': 'True about Rigor mois:- \nSelect and explain. \nA. Does not occur in fetus less than 2 months, B. Involves voluntary muscles only, C. Lasts for 12-24 hours in summer, D. Stas in chin', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Rigor mois involves both voluntary and involuntary muscles, earlier in involuntary muscles. Rigor mois is not seen in Rigor mois is tested by Fetus <2 months Trying to lift eyelids Heat stiffening Lowering the jaw Embalming Bending neck & thighs Instrument: Electromyogram', 'role': 'assistant'}]