A Secret Service Agent Steps in Front of the President

A Secret Service agent steps in front of the president of the United States, prepared to be killed or injured if the president's safety is threatened. Psychologically speaking, the Secret Service agent's behavior is:

A) functional but psychologically abnormal.
B) functional and not psychologically abnormal.
C) dysfunctional and psychologically abnormal.
D) dysfunctional but not psychologically abnormal.