This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Skeletal infections, Subject name: Anatomy
[{'content': 'Osteogenic sarcoma arises from \nSelect and explain. \nA. Epiphyses, B. Metaphysis, C. Growth plate, D. Epiphyseal coex', 'role': 'user'}, {'content': 'Answer: B \nExplanation: The tumor most commonly begins in the Metaphysis The most common site of involvement is Metaphysis of long bone around knee ***lower end of femur ***upper end of tibia Refer Maheshwari 4th/e p. 232', 'role': 'assistant'}]