The Results of the NICHD Study Led to Which Conclusion

The results of the NICHD study led to which conclusion about the impact of child care on attachment?

A) An insensitive mother is the only cause of an insecure attachment.
B) No matter how sensitive the mother, child care is harmful.
C) All mothers of child care children are depressed.
D) The child's personality is the only factor.
E) Child care, in itself, was unrelated to the security of the child's attachment.