Choose your answer from: (A). h2o; (B). HIV; (C). SNPs; (D). blood; (E). organs; (F). p53; (G). DDT; (H). HPV;

Fact 1: Antigens are molecules that the immune system recognizes as foreign to the body. Fact 2: Another such HPV antigen is the E6 antigen. Given the two facts above, what is recognized as foreign to the body by the immune system?
Answer:
(H).