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': 'Longer rigor mois occurs with - \nSelect and explain. \nA. Vegetables poisons, B. Strychnine, C. Opium, D. Septicemia', 'role': 'user'}, {'content': 'Answer: B \nExplanation: The onset of rigor mois is early and persists for longer duration in strychnine poisoning. Dr. Narayana Reddys Synopsis of Forensic Medicine & Toxicology 27 th edition pg. 80.', 'role': 'assistant'}]