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: Pathology
[{'content': 'Bone tumour arising from metaphysis ? \nSelect and explain. \nA. Osteogenic sarcoma, B. Ewing sarcoma, C. Osteoclastoma, D. Osteiod osteoma', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Osteogenic sarcomaMetaphvseal lesions Diaphyseal lesions o Osteogenic sarcoma o Ewing sarcomao Unicameral (simple) bone cyst o Lymphomaso Aneurysmal bone cyst o Fibrous dysplasiao Fibrous coical defect o AdamantinomaHistiocytosisOsteoid osteoma", 'role': 'assistant'}]