Which of the Following Reasons Was NOT Suggested by the Text

Which of the following reasons was NOT suggested by the text to potentially account for the finding that people who were aggressive or psychotic were far more likely to be identified among the poor than the middle class?

A) Dysfunctional people gravitate to the lower end of the socioeconomic spectrum.
B) Being poor produces higher levels of stress,and therefore higher rates of psychological dysfunction are to be expected.
C) More acceptable diagnoses are reserved for people from the upper classes.
D) Poorer people typically have genetic predispositions toward mental illnesses.
E) The resentment at being poor may generate behaviours that are seen by others as antisocial or dysfunctional.