Which of the following statements about breastfeeding is true?

A) Breastfed and bottle-fed infants in industrialized nations do not differ in quality of the mother–infant relationship.
B) Compared with those who were breastfed, children and adolescents who were bottle-fed have more emotional adjustment difficulties.
C) Most studies report that children and adolescents who were breastfed are smarter than those who were bottle-fed.
D) Because more women are in the workforce, breastfeeding has become less common in industrialized nations.

A