Phillips Chose to Study the Effects of Publicized Prizefights on Homicide

Phillips chose to study the effects of publicized prizefights on homicide rates because:

A) prizefights are especially popular among people who are highly aggressive, compared to less-aggressive people.
B) prizefights have never been studied before, except in the laboratory.
C) violence in prizefights is presented by the media as rewarded, exciting, real, and justified.
D) Phillips wanted to see if boxing, as a particularly violent sport, elicited more violent behavior than other sports such as hockey, football, or soccer.