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: Unknown
Which of the following is the auto antibody associated with Rheumatoid arthritis - 
Select and explain. 
A. Anti DLE, B. Anti CCP, C. Antids DNA, D. Antihistone
B: Anti CCP
Answer: B: Anti CCP 
Explanation: Anti CCP