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: Surgery
[{'content': 'Toxicity of local anaesthesia is reversed by : \nSelect and explain. \nA. IV epinephrine, B. IV nalorphine, C. IV Barbiturates, D. IV sodium bicarbonate', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]