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': 'In systemic LA toxicity there is: \nSelect and explain. \nA. Post depression convulsion, B. Post convulsion depression, C. Convulsions, D. Depression', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]