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 anti-inflammatory mediator is? 
Select and explain. 
A. Interleukin 4, B. Interleukin 1, C. Interleukin 6, D. TNF- Alpha
A: Interleukin 4
Answer: A: Interleukin 4 
Explanation: IL-4 has mainly anti-inflammatory property with some proinflammatory action. Proinflammatory cytokines
i) Major:- IL-1, TNF- alpha, IL-6
ii) Other:- IL-2, IL-4, IL-5, IL-6, IL-8, IL-11, IL-12, IL-15, IL-21, IL-23, IFN-gamma, GM-CSF 
Anti-inflammatory cytokines
i) IL-4, IL-10, IL-13, and transforming growth factor β (TGF-β)