Producers of TV shows that depict violence often ignore the studies that indicate that children who ...

Producers of TV shows that depict violence often ignore the studies that indicate that children who watch violence are more likely to be aggressive, have fewer friends, and have poorer relationships with their parents than children who do not watch violent shows. The producers of the violent TV shows probably ignore the research because
 
  a. they did not understand the research.
  b. the findings contradict deeply held beliefs.
  c. the findings conflict with the producers' vested interests.
  d. logistical problems entered.
  e. administrative control interferes.