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
True about Dermatomyositis -a) Gottron signb) ANA is positive in all casesc) All cases a/w internal malignancyd) Proximal muscle wastinge) Steroid maintenance 
Select and explain. 
A. acd, B. bde, C. ade, D. ad
C: ade
Answer: C: ade 
Explanation: None