Regarding Stress and the Immune System, Which of the Following

Regarding stress and the immune system, which of the following statements is FALSE?

A) Antibodies lock onto antigens and mark them for destruction by killer lymphocytes.
B) Continued secretion of corticosteroids dampens the functioning of immune-system cells.
C) Psychological techniques, like journaling, can help improve immunological functioning.
D) The only way to acquire immunity to antigens is through immunization or vaccination.
E) During examination periods, college students often experience compromised immune system responses.