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': 'Spinal anaesthesia should be injected into the space between – \nSelect and explain. \nA. T12 – L1, B. L1 – L2, C. L3 – L4, D. L5 – S1', 'role': 'user'}, {'content': 'Answer: C \nExplanation: L2-3 or L3-4 intervertebral space is used in adult as adult spinal cord ends at lower border of L1 vertebrae.\nL4-5 intervertebral space is used in children as spinal cord ends at lower border of L3 vertebrae in children.', 'role': 'assistant'}]