Which of the Following Is True

Which of the following is true?

A) Secondhand smoke poses no threat to nonsmokers.
B) A nonsmoking spouse of a smoker has approximately the same health risk from smoking as a nonsmoker.
C) In the United States, secondhand smoke from mothers kills more babies than child abuse.
D) A young person who quits smoking has the same life expectancy as an older person who quits smoking