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: Anatomy
[{'content': 'The highest point of iliac crest is at the level of: \nSelect and explain. \nA. L3-4, B. L5-51, C. L4-5, D. SI-2', 'role': 'user'}, {'content': 'Answer: A \nExplanation: L3-4', 'role': 'assistant'}]