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': 'Acute osteomyelitis of long bones commonly affects the \nSelect and explain. \nA. Epiphysis, B. Diaphysis, C. Metaphysis, D. Aicular surfaces', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Metaphysis of long bones is the earliest and most common site involved in osteomyelitis. x ray showing acute osteomyliyis of long bones ref : maheswari 9th ed', 'role': 'assistant'}]