What is the main difference between the classical and alternative pathways of complement activation?

• A. The classical pathway requires antibodies, while the alternative pathway does not.
• B. The alternative pathway is slower than the classical pathway.
• C. The alternative pathway neutralizes viruses, while the classical pathway neutralizes bacteria.
• D. The classical pathway is activated by lipids, while the alternative pathway is activated by carbohydrates.

Answer: (A)