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': 'The most characteristic radiographic sign in a child with leukemia is - \nSelect and explain. \nA. Osteosclerosis of the metaphysic, B. Metaphyseal translucencies, C. Periosteal reaction, D. Osteolytic lesion', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Metaphyseal translucencies", 'role': 'assistant'}]