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': 'Natural stiffening of muscles after death is known as ? \nSelect and explain. \nA. Algor mois, B. Rigor mois, C. Postmoem lividity, D. Cadaveric spasm', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e. Rigor mois Rigor mois is natural stiffening after death as it occurs in all death.Cadeveric spasm does not occur in all deaths.", 'role': 'assistant'}]