During a Primary Humoral Response to Antigens, All of the Following

Multiple Choice

During a primary humoral response to antigens, all of the following occur, except

A) the antigen must activate appropriate B cells.
B) B cells may take time to develop into plasma cells and memory cells.
C) antibody levels do not peak until 1 to 2 weeks after the initial exposure.
D) neutrophils invade the surrounding areas, releasing chemotactic substances.
E) the first immunoglobulins to appear in circulation are of the IgM type.