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: Orthopaedics
[{'content': 'Wandering acetabulum is found in \nSelect and explain. \nA. Acetabular fractures, B. Tuberculosis hip, C. Septic hip, D. CDH', 'role': 'user'}, {'content': 'Answer: B \nExplanation: ref : maheswari 9th ed', 'role': 'assistant'}]