Which of the Following Statements Are True of the Placenta

Which of the following statements are true of the placenta and fetal circulation (Select all that apply) ?

A) The umbilical arteries carry oxygen and nutrients to the fetus.
B) The foramen ovale permits blood to flow from the left atrium to the right atrium.
C) The ductus venosus takes blood to the superior vena cava after bypassing the lungs.
D) The ductus arteriosus takes blood from the aorta to the pulmonary artery.
E) The placenta is made of both fetal and maternal tissue.
F) Fetal carbon dioxide is brought to the placenta by the umbilical vein.