The Causal Connection Between Violent Media and Aggression Remains Unclear

The causal connection between violent media and aggression remains unclear because

A) parents who allow their children to watch violent television do so under strict parental supervision.
B) there has not been enough research conducted on violent programming and aggression in children.
C) children who view violent media may already be prone to aggressive behavior.
D) the relationship between violent media and aggression is only apparent among boys, not girls.
E) high levels of aggression and violent media consumption only co-occur in low SES-households, limiting the populations that can be studied.