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: Unknown
[{'content': 'Fastest reversible anesthesia is given by which route - \nSelect and explain. \nA. Inhalational, B. I/V, C. Local anesthesia, D. None', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans - A', 'role': 'assistant'}]