A Nurse Is Administering Vitamin K to an Infant Shortly

A nurse is administering vitamin K to an infant shortly after birth.The parents ask why their baby needs a shot.The nurse explains that vitamin K is

A) important in the production of red blood cells.
B) necessary in the production of platelets.
C) not initially synthesized because of a sterile bowel at birth.
D) responsible for the breakdown of bilirubin and prevention of jaundice.