This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Tuberculosis of Bone & Joints, Subject name: Orthopaedics
[{'content': 'Commonest site of skeletal tuberculosisis: \nSelect and explain. \nA. Tibia, B. Radius, C. Humerus, D. Vertebrae', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans: d (Vertebrae)Ref: Maheshwari Ortho, 3rd ed, p. 169', 'role': 'assistant'}]