Which of the Following Phenomena Would Be Least Likely to Result

Multiple Choice

Which of the following phenomena would be least likely to result in activation of the complement system?

A) Recognition of an antibody bound to the surface of a microbe
B) Increase in tissue blood flow and capillary permeability, so fluids/proteins can leak into the area
C) Activation of toll-like receptors (TLRs) on complement proteins
D) Direct recognition of microbial proteins