In the Study by Dabbs and Morris (1990),what Was the Explanation

In the study by Dabbs and Morris (1990) ,what was the explanation for why higher testosterone was linked to aggression only among men of low socioeconomic status?

A) Men with low socioeconomic status did not have good role models.
B) Men with low socioeconomic status are more susceptible to the culture of honor.
C) Men with low socioeconomic status are less able to control their aggressive impulses.
D) Men with low socioeconomic status do not have non-violent ways to achieve status.