A Mother Brings Her Newborn in for an Assessment and Asks

A mother brings her newborn in for an assessment and asks, "Is there something wrong with my baby? His head seems so big." Which statement is true regarding the relative proportions of the head and trunk of the newborn?

A) At birth, the head is one-fifth the total length.
B) Head circumference should be greater than chest circumference at birth.
C) The head size reaches 90% of its final size when the child is 3 years old.
D) When the anterior fontanelle closes at 2 months, the head will be more proportionate to the body.