This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Immune system, Subject name: Medicine
Drug induced lupus can be identified by 
Select and explain. 
A. Anti-histone antibodies, B. Double stranded DNA antibodies, C. Antinuclear antibodies, D. Anti-SM antibodies
A: Anti-histone antibodies
Answer: A: Anti-histone antibodies 
Explanation: Ref Harrison's internal medicine 20e p2517