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': 'Smell of burnt rope due to poisoning with: AIIMS 14 \nSelect and explain. \nA. Aluminum phosphide, B. Cannabis, C. Arsenic, D. Cyanide', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. Cannabis', 'role': 'assistant'}]