Which of the following fetal structures is correctly matched to its purpose in fetal circulation?
A. Ductus arteriosus—bypass liver by shunting blood from umbilical vein to the IVC
B. Ductus venosus—bypass lungs by shunting blood from the pulmonary artery to the aorta
C. Foramen ovale—bypass lungs by shunting blood from the RA to the LA
D. Umbilical vein—transport deoxygenated fetal blood back to the placenta
E. None of the above
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