All of the following statements are true about the second step of the agglutination process except

a. Is dependent upon many factors, including the ionic strength of the test system, pH, and temperature
b. Occurs when antigen and antibody come together to form an immune complex
c. Occurs when antibody cross-links form between red blood cells, creating a lattice
d. Occurs when an antibody is be able to bind to an epitope on each of two different red blood cells

Answer: b