Which of the Following Statements Is True About the Impact

Which of the following statements is true about the impact of hormonal changes on aggression?

A) Research shows that low levels of serotonin make aggression more likely in humans and animals.
B) Relatively high levels of serotonin, whether in men or women, correlate positively with a propensity toward violence.
C) Relatively high levels of testosterone, whether in men or women, correlate negatively with a propensity toward violence.
D) Research shows that naturally occurring testosterone levels are lower in criminals convicted of violent crimes than in those convicted of nonviolent crimes.