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
Which of the following cytokines are anti-inflammatory in nature? 
Select and explain. 
A. IL-4, B. IL-10, C. TGF-β, D. All of the above
D: All of the above
Answer: D: All of the above 
Explanation: IL-4 and IL-6 are both pro and anti-inflammatory.
IL-10 and TGF-β are anti-inflammatory.