In the United States, Which of the Following Is True

In the United States, which of the following is true about the measures taken to reduce the number of child deaths in motor vehicle crashes?

A) Recommendations that 4-year-olds should not use belt-positioning booster seats have reduced the number of such deaths by almost 50 percent.
B) Campaigns to keep children in the back seats of cars have reduced the number of such deaths by 200 a year from 1996 to 2003.
C) The use of forward-facing car seats for 4-year-olds has almost brought down the number of such deaths to zero.
D) Airbags that have been designed to primarily protect children have significantly reduced the incidence of such deaths.