Newborns Receive a Single Injection of Vitamin K at Birth

Multiple Choice

Newborns receive a single injection of vitamin K at birth because

A) newborns do not have enough mature GI flora to make vitamin K.
B) breast milk is a poor source of vitamin K.
C) the trauma of labor and delivery depletes the newborn's vitamin K stores.
D) newborns cannot absorb any of the vitamin K from breast milk or formula.