Infant Characteristics Do Not Show Strong Relationships with Attachment Quality

Infant characteristics do not show strong relationships with attachment quality because

A) temperament is not stable until middle to late childhood.
B) most newborns easily form secure attachments with their primary caregivers.
C) many child attributes can lead to secure attachment as long as the caregiver behaves sensitively.
D) measuring the quality of the emotional bond between parents and their infants is difficult.