The Figure Above Illustrates Antibody Titers Produced During a Primary

Multiple Choice

The figure above illustrates antibody titers produced during a primary and secondary immune response. All of the following statements about the primary and secondary immune response are correct EXCEPT which one?

A) Antibody is produced at a much higher rate during the secondary immune response.
B) The antibody level produced in the secondary response is three times greater than that produced during the primary immune response.
C) There is a lag time between antigen exposure and antibody production in the primary immune response that is not seen in the secondary immune response.
D) The difference between the two responses is due to the presence of memory cells during the secondary response.
E) Antibody levels stay elevated for a longer time following a secondary response.