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: Medicine
[{'content': "All the following are features of Scleroderma except- \nSelect and explain. \nA. Dysphagia, B. Raynand's phenomenon, C. Skin contracture, D. Clacification in all the long bones", 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]