This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Abdominal Radiography, Subject name: Radiology
[{'content': 'Comment on the diagnosis shown below? \nSelect and explain. \nA. Drooping water lily sign, B. Horse shoe kidney, C. Flower Vase kidney, D. Duplication of kidney', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. (a) Drooping water Lily sign.', 'role': 'assistant'}]