This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Orthopaedics
[{'content': "Small child with discharging pus from sinus in lateral aspect of thigh. Diagnosis all Except \nSelect and explain. \nA. Ewing's sarcoma, B. Garry's osteomyelitis, C. Chronic osteomyelitis, D. Infection of soft tissue", 'role': 'user'}, {'content': 'Answer: D \nExplanation: (D) Infection of soft tissue', 'role': 'assistant'}]