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': 'Earliest & characteristic radiological finding of leukemia \nSelect and explain. \nA. Translucent transverse metaphyseal bands, B. Metaphyseal Osteosclerosis, C. Periosteal reaction, D. Metaphyseal cortical erosions', 'role': 'user'}, {'content': 'Answer: A \nExplanation: All the above are the findings of leukemia. But Earliest & characteristic finding is option A.', 'role': 'assistant'}]