Which of the Following Was a Finding of Recent Studies

Which of the following was a finding of recent studies into the lives of children after adoption?

A) Only a minority of adopted children were classified,after a period of five years from time of adoption,as "well-adjusted."
B) The mother's secure attachment proved more important for adopted children's secure attachment than did the father's secure attachment.
C) Adopted children tend to externalize less than nonadopted children.
D) Long-term foster care proved just as beneficial to the long-term health and well-being as did early adoption.