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: Orthopaedics
[{'content': 'True about Osteomyelitis \nSelect and explain. \nA. X-ray changes seen after 24 hours, B. MRI changes seen in < 6 hours, C. First X-ray change seen is sclerosis at metaphysis, D. Bone scan shows increased activity', 'role': 'user'}, {'content': 'Answer: C \nExplanation: First X-ray changes seen in loss of soft tissue plane.', 'role': 'assistant'}]