Identify the True Statement About the Anamnestic Response Versus the Primary

Identify the true statement about the anamnestic response versus the primary response.

A) The primary response has a long lag phase; the anamnestic response has a short lag phase.
B) The primary response has a short lag phase; the anamnestic response has a long lag phase.
C) the primary response involves a rapid increase in antibody titer, whereas the anamnestic response involves a rapid decrease in antibody titer.
D) The primary response involves predominantly an increase in IgG antibodies, whereas the anamnestic response involves predominantly an increase in IgM antibodies.