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': "In dermatomyositis which is not seen- \nSelect and explain. \nA. Salmon patch, B. Gottron's papules, C. Peringual telangiectasia, D. Mechanic finger", 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]