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: Surgery
[{'content': '"Rugger Jersey Spine" is seen in: \nSelect and explain. \nA. Fluorosis, B. Archondoplasia, C. Renal osteodystrophy, D. Marfan s syndrome', 'role': 'user'}, {'content': "Answer: C \nExplanation: Renal osteodystrophy may produce a 'rugger jersy' (striped) appearance in lateral X-rays of the spine, due to alternating bonds of increased and decreased bone density. Ref: Apley's System of Ohopedics and Fractures, 8th Edition, Page 124; Harrison's Principles of Internal Medicine, 16th Edition, Pages 1225-29.", 'role': 'assistant'}]