This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Spinal injuries, Subject name: Anatomy
[{'content': 'Prolapsed interveebral Disc is most common at- \nSelect and explain. \nA. C10C11, B. C2C3, C. L2L4, D. L5S1', 'role': 'user'}, {'content': 'Answer: D \nExplanation: L5-S1 disc space is the most commonly involved space in disc prolapse. "Lumbar interveebral disc herniation is most common at L5-S1 and slightly less common at L4 - L5, and rare at L3-L4 or above". "The disc at L5-S1 is most commonly involved, followed in order by L4-L5 and L3-L4". REF : MAHESWARI 9TH ED', 'role': 'assistant'}]