How do cytokines function?

• A. They bind directly to microbes to enhance their chance of being ingested (phagocytosed).
• B. They are secreted in the phagolysosomes of macrophages to kill ingested microbes.
• C. They are secreted by one cell and trigger cellular response in another cell.
• D. They work as a complex of proteins to produce a hole in microbial cell membranes to lyse them.