This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: DNB 2018, Subject name: Pathology
Which of the following molecules activates "Classically activated macrophage"/M1 type macrophage? 
Select and explain. 
A. IFN-g, B. IL-4, C. IL-13, D. IL-1
A: IFN-g
Answer: A: IFN-g 
Explanation: IL-10 and TGF-b are anti-inflammatory.