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: Microbiology
Phagocytosis of mycobacterium tuberculosis by macrophages is mainly mediated by: 
Select and explain. 
A. IL 6, B. IL 3, C. IL 12, D. IFN Gamma
D: IFN Gamma
Answer: D: IFN Gamma 
Explanation: Ans. is. 'd' i. e., IFN Gamma