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: Anaesthesia
[{'content': 'Systemic toxicity is more with \nSelect and explain. \nA. Spinal anaesthesia, B. Epidural anaesthesia, C. Both, D. None', 'role': 'user'}, {'content': 'Answer: B \nExplanation: More systemic toxicity is seen with epidural anaesthesia .', 'role': 'assistant'}]