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': 'Development of human kidney begins in: March 2002 \nSelect and explain. \nA. Dorsal region, B. Lumbar region, C. Thoracolumbar region, D. Sacral region', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. D i.e. Sacral region', 'role': 'assistant'}]