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: Surgery
[{'content': 'Persistent foetal lobulation of adult kidney is due to: \nSelect and explain. \nA. Congenital renal defect, B. Obstructive uropathy, C. Intrauterine infections and scar, D. Is a normal variant', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]