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': 'Carbon monoxide poisoning causes:JIPMER 11; AIIMS 14 \nSelect and explain. \nA. Anemic hypoxia, B. Histotoxic hypoxia, C. Anoxic hypoxia, D. Stagnant hypoxia', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. Anemic hypoxia', 'role': 'assistant'}]