Konijin Et Al

Konijin et al.(2007) had boys play either a violent or non-violent video game for 20 minutes before competing against an opponent.In the competition,a win was rewarded with the right to deliver a blast of noise with the intensity set by the winning boy.How did playing the violent game affect the boys' responses?

A) Those who had played the violent video game were more aroused,so they won more trials and delivered more blasts of sound.
B) Those who had played the violent video game were more distracted,so they lost more trials and received more blasts of sound.
C) Those who had played the violent video game were more likely to set very high levels of sound.
D) Those who had played the non-violent video game became more frustrated,so they set very high levels of sound when they received a loud blast.