Which Child Is Showing Reactive Aggression

Which child is showing reactive aggression?

A) Ken, who teased and harassed one of his classmates for no apparent reason other than to humiliate him.
B) Joyce, who spread nasty rumours about another girl after she didn't invite Joyce to her birthday party.
C) Kim, who, after losing the election for class president, beat up the newly elected president.
D) Rhett, who pushed and shoved his way to the front of the line to be the first to be able to buy tickets for a popular concert.