Which of the following is an example of a semi-specific, innate immune mechanism associated with mucosal surfaces?

A) Secretory IgA prevents adhesion to mucosal surface.
B) Extravasation of neutrophils is triggered by specific signals.
C) Interferons produced by the host will act on specific viruses in the mucosa.
D) Toll-like receptors on the host bind a specific microbe-associated molecular pattern, or MAMP.
E) The type of inflammation mounted varies with pathogen.