Which of the Following Statements About Parental Smoking Is True

Which of the following statements about parental smoking is true?

A) Children are at risk for health problems when they live in homes in which a parent smokes.
B) Most children and adolescents in the United States are exposed to tobacco smoke in the home.
C) Children exposed to tobacco smoke in the home are not more likely to develop asthma than children in nonsmoking families.
D) Parental smoking is the leading cause of death in young children in the United States.