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': 'X-ray finding of osteomyelitis within 8 day is – \nSelect and explain. \nA. Cystic swelling, B. Soft tissue swelling, C. New bone formation, D. Sequestrum formation', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Earliest X-ray finding of osteomyelitis is soft tissue swelling with loss of soft tissue planes.', 'role': 'assistant'}]