This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Anatomy
[{'content': 'All are pierced in Lumbar Puncture except \nSelect and explain. \nA. Post longitudinal ligament, B. Ligamentum Flavum, C. Interspinous Ligament, D. Supraspinous ligament', 'role': 'user'}, {'content': 'Answer: A \nExplanation: 1 lies Anterior to the spinal cord', 'role': 'assistant'}]