Gee and Leith (2007) Analyzed Aggressive Behavior in the National

Gee and Leith (2007) analyzed aggressive behavior in the National Hockey League (NHL) . They concluded that players born in North America were more likely to resort to fighting to deal with their frustration because

A) hockey players generally have aggressive personalities.
B) they were always punished severely when they acted aggressively.
C) the sport of hockey makes people act aggressively.
D) they had been exposed to models of aggression in hockey from a young age.