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
[{'content': 'Pro-inflammatory cytokines are - \nSelect and explain. \nA. IL-1, B. IL-2, C. IL-4, D. All', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is All-`a' i.e.,IL-1;'b' i.e., IL-2;'c' i.e.,IL-4", 'role': 'assistant'}]