United States Infant Mortality Is Higher Among ____ Families Than

United States infant mortality is higher among ____ families than in ____ families,in part because ____.

A) middle-SES; low-SES; middle-SES mothers are more likely to live in rural parts of the country
B) middle-SES; high-SES; middle-SES fathers are more likely to be absent from the family
C) high-SES; low-SES; high-SES mothers are not likely to consume fluoride in their drinking water
D) low-SES; high-SES; low-SES mothers are less likely to receive prenatal care