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: Dental
[{'content': "All are seen in dermatomyositis except \nSelect and explain. \nA. Calcinosis cutis, B. Heliotropic rash, C. Shawl sign, D. Gottron's rash", 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]