This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Neuroanatomy, Subject name: Anatomy
[{'content': 'In adults, the spinal cord normally ends at: \nSelect and explain. \nA. Lower border of L1, B. Lower border of L3, C. Lower border of L5, D. Lower border of S1', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. A Lower border of L1Ref: IB Singh, 8th ed. pg. 31* Spinal cord begins at foramen magnum and, in adults, ends at lower border of L1.* In newborn, spinal cord ends at L3 vertebrae.', 'role': 'assistant'}]