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: Pathology
[{'content': "CREST syndrome includes all except: \nSelect and explain. \nA. Calcinosis cutis., B. Reynaud's phenomenon, C. Tetanus., D. Sclerodactyly.", 'role': 'user'}, {'content': 'Answer: C \nExplanation: Calcinosis cutis, Raynauds phenomenon, Esophageal dysfunction, Sclerodactyly and Telangiectasia.', 'role': 'assistant'}]