Inflammation,fever,phagocytosis,and Antimicrobial Molecules Are Considered Innate Because ________

Inflammation,fever,phagocytosis,and antimicrobial molecules are considered innate because ________.

A) they are not antigen-specific; they contribute to host defenses regardless of the source of activation
B) they are activated only if the system has encountered the antigen previously
C) they are physical barriers that block the binding of pathogens to host tissues
D) they operate independently of the first line of defense and the B and T lymphocytes in the third line of defense