In Question 17, the Substance Found in the Patient's CSF

In question 17, the substance found in the patient's CSF that gives the positive agglutination test also plays a role in the pathogenesis. What is that role?

A) It inhibits phagocytic uptake in the bloodstream of a nonimmune individual
B) It promotes invasion of the bloodstream
C) It enhances opsonization
D) It causes a strong inflammatory response loosening tight junctions, allowing invasion of the central nervous system
E) It allows binding to the vascular endothelium, triggering the uptake and passage into the CNS