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
Cytokines: 
Select and explain. 
A. Includes interleukins, B. Produced only in sepsis, C. Are simple proteins, D. Have highly specific action
A: Includes interleukins
Answer: A: Includes interleukins 
Explanation: None