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: Radiology
[{'content': 'All are USG finding of Autosomal recessive PCKD except? \nSelect and explain. \nA. Retain reniform shape (Kidneys), B. Oligohydramnios, C. Corticomedullary differentiation is lost, D. Cysts are greater than 3 cm in diameter', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Cysts rarely exceed 1 - 2 cm in diameter.', 'role': 'assistant'}]