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: Pathology
The most diagnostic test for SLE is ? 
Select and explain. 
A. Complement fixation test, B. Antibodies against ANA cell, C. Antibodies against DNA, D. Antibodies against nucleus
C: Antibodies against DNA
Answer: C: Antibodies against DNA 
Explanation: Ans. is 'c' i.e., Antibodies against DNA