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: Skin
[{'content': 'Antibody that is strongly associated with polymyositis? \nSelect and explain. \nA. Anti-jol, B. Anti-ku, C. Anti-Scl-70, D. Anti-sm', 'role': 'user'}, {'content': 'Answer: A \nExplanation: A. i.e. Anti Jol Myositis specific auto antibodies include the antisynthetases 2. Whereas, PM/Scl, Ro/SSA (Ro 52, Ro 60), and U1- RNP represent major myositis associated autoantibodies.', 'role': 'assistant'}]