This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Immunology, Subject name: Microbiology
[{'content': 'N K cells activity is enahnced by - \nSelect and explain. \nA. IL-1, B. TNF, C. IL-2, D. TGP-b', 'role': 'user'}, {'content': 'Answer: C \nExplanation: IL-2 promote growth and differentiation of T & B cells , cytotoxicity of T & NK cells Reff: Ananthanarayan & Panikers textbook of microbiology 9th edition pg: 154 table 15.3', 'role': 'assistant'}]