This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Death and postmortem changes, Subject name: Forensic Medicine
[{'content': 'Heat stiffening in muscles occurs above temperature (degC) - \nSelect and explain. \nA. 30, B. 40, C. 50, D. 60', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Heat stiffening of muscles occur in temperature above 60 degree celsius due to denaturation and coagulation of muscle proteins. It simulates rigor mois. This remains till decomposition stas and there was no rigor mois. Dr. Narayana Reddys Synopsis of Forensic Medicine & Toxicology 27 th edition pg. 80.', 'role': 'assistant'}]