After having an ultrasound, the fetus' heart shows that "normal fetal circulation is occurring.”. The RN is teaching a pregnant client about normal fetal circulation.Which of the following statements is consistent with the finding?

Blood is returning to the right atrium from the pulmonary system.

Blood is returning to the placenta via the umbilical arteries.

Blood is being shunted to the right side from the left side of the heart.

A right to left shunt is seen between the umbilical arteries.