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
First step in management of CO poisoning is? 
Select and explain. 
A. Intravenous methylene blue, B. 100% oxygen therapy, C. Ascorbic acid administration, D. None of the above
B: 100% oxygen therapy
Answer: B: 100% oxygen therapy 
Explanation: 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.