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': 'In Scurvy, wimberger sign is best seen in: \nSelect and explain. \nA. Lower end of femur, B. Lower end of radius, C. Patella, D. Upper end of radius', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. Lower end of femur', 'role': 'assistant'}]