Which Statement Best Describes to Children's Exposure to Media Violence

Which statement best describes to children's exposure to media violence in Canada?

A) There is currently no program in place in Canada to monitor children's exposure to violence.
B) Only American programs broadcast in Canada must include show ratings and blocking technology embedded in the broadcast signal.
C) V-chips allow Canadian parents to customize what their children watch at home.
D) Currently,Canadian networks do not have to alert audience members to the fact that program content might include violence,coarse language,sexuality,and/or mature themes.