This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Musculoskeletal  disorders, Subject name: Pediatrics
[{'content': 'All of the following are radiological signs of scurvy except: \nSelect and explain. \nA. White line of Frankel, B. Cupping and fraying, C. Ground glass appearance, D. Zone of rarefraction', 'role': 'user'}, {'content': 'Answer: B \nExplanation: White line of Frankel, ground glass appearance, and zone of rarefraction are the radiological signs seen in scurvy: Radiological signs in Scurvy includes: White line of Frankel: calcified cailage at metaphyses Trummerfeld zone: lucent metaphyseal band underlying Frankel line Pelkan spur: Lateral prolongation of the white line, which present at the coical ends. Wimberger ring sign: Circular, opaque radiological shadow surrounding epiphyseal centers of ossification Ref: nelson textbook of pediatrics 21st edition Pgno: 374', 'role': 'assistant'}]