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
[{'content': 'Cytokines: \nSelect and explain. \nA. Includes interleukins, B. Produced only in sepsis, C. Are simple proteins, D. Have highly specific action', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]