One of the Reasons It Is Difficult to Accurately Diagnosis

One of the reasons it is difficult to accurately diagnosis clinical syndromes in very young infants is related to which of the following factors?

A) It is impossible to predict how significant an infant's maladjustment may impact later development.
B) It is difficult to describe what typical behavior is in a young infant.
C) It is important to consider the impact of the infant-caregiver relationship on a child's development.
D) It is important to accurately describe and diagnosis the level of distress an infant is experiencing.