How do regulatory T cells differ from cytotoxic T cells in their function?

• A. Regulatory T cells suppress the immune response, while cytotoxic T cells kill infected cells.
• B. Cytotoxic T cells produce antibodies, while regulatory T cells produce cytokines.
• C. Both regulatory T cells and cytotoxic T cells promote immune responses by killing pathogens.
• D. Regulatory T cells activate B cells, while cytotoxic T cells suppress them.

Answer: (A)