Which one of the following statements about the umbilical cord is false?
A) The chorion covers the cord and blends with the fetal skin at the umilicus. B) The umbilical vein carries oxygenated blood to the fetus.
C) One umbilical vein and two umbilical arteries make up the umbilical cord.
D) The umbilical cord is the essential link from the mother to the fetus.