Which statement describes the relationship between the ductus arteriosus and blood flow in the fetus?
O Because pulmonary circulation pressure is high, the ductus arteriosus facilitates blood flow into the lungs.
O The blood returning to the heart from the vena cava is directed through the ductus arteriosus to the left atrium.
O The left atrium and left ventricle are nonfunctional in the infant.
O The ductus arteriosus diverts blood away from the left side of the heart.
O Pulmonary circulation pressure is high; the ductus arteriosus directs blood away from the lungs and into the aorta.