What Has Been Demonstrated by Research Examining the Long-Term Effects

What has been demonstrated by research examining the long-term effects of media violence

A)  The more violence children watch on TV the less aggressive they tend to act at home and school. 
B)  Watching violence on TV causes relatively nonaggressive children to become more aggressive but does not increase the level of aggression of relatively aggressive children. 
C)  No consistent relationship exists between how much violence children watch on TV and aggressive behaviour. 
D)  The more violence children watch on TV the more aggressive they tend to be at home and school.