This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Skeletal system, 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: Sequence of changes in osteomyelitis on X-ray are : Earliest finding of osteomyelitis on X ray within 8 days is soft tisse swelling and loss of soft tissue planes Bone destruction and formation of periosteal reaction seen at 10-14 days Invoucrum formation at 3 weeks Sequestrum formation at 4 weeks', 'role': 'assistant'}]