This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Forensic Medicine
[{'content': 'All are true regarding muscular changes after death except ? \nSelect and explain. \nA. Rigor mois occurs 1-2 hours after the death, B. Cadaveric spasm involves involuntary muscles, C. Rigor mois involves voluntary muscles, D. Rigor mois involves involuntary muscles', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Cadaveric spasm involves involuntary muscles", 'role': 'assistant'}]