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: Pediatrics
[{'content': 'Definitive sign of scurvy in X-ray - \nSelect and explain. \nA. Ringed epiphysis, B. Ground glass appearance, C. White line in metaphysis, D. Thin cortex', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ringed epiphysis (Wimburger sign): It is white ring surrounding the epiphyseal centres of ossicification. It is relatively specific for scurvy.\nWhite line in metaphysis (Freaenkel) can be seen in scurvy, healing rickets, Plumbism, severe PEM, congenital syphilis and acute leukemia\nOption b & d are not specific for scurvy.', 'role': 'assistant'}]