Which of the Following Observations on Parent-Infant Bonding Was Made

Which of the following observations on parent-infant bonding was made in the controversial research led by Klaus and Kennell?​

A) Extended parent-infant contact is required during the first hours postpartum in order to foster bonding.
B) Parent-infant bonding is a simple process involving just the desire to have a child.
C) Serious maternal depression can delay bonding with newborns.
D) A history of rejection by parents can interfere with women's bonding with their own children.