An Example of an Adverse Stress Effect on Immune Function

An example of an adverse stress effect on immune function is

A) a person who cares for a relative with Alzheimer's disease produces fewer antibodies to a bacterial agent.
B) fighter pilots show higher immune responses over successive missions.
C) husbands whose wives died from breast cancer show improved immune response.
D) seen when antibody production is stimulated by the release of glucocorticoids.
E) when high glucocorticoid levels increase blood pressure.