This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Forensic Toxicology - Concepts, Statutes, Evidence, and Techniques, Subject name: Forensic Medicine
[{'content': 'First step in management of CO poisoning is? \nSelect and explain. \nA. Intravenous methylene blue, B. 100% oxygen therapy, C. Ascorbic acid administration, D. None of the above', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e. 100% oxygen therapy o First step is actually removal of the patient from the place of poisoning.o First step in clinical management is 100% oxygen by face mask.o IV methylene blue is the treatment choice if there is methemoglobinemia.", 'role': 'assistant'}]