Heart structure question

What is the sequence in which the structures of the human heart would be encountered by a red blood cell on its way back to the heart from the kidneys? Which structure would be fourth?
A. Inferior vena cava
B. Left ventricle
C. Pulmonary artery
D. Pulmonary vein
E. Right atrium

Answer says it is D but isn't the answer C instead. Since the 1st structure would be the vena cava 2nd would be the right atrium, thrid would be the right ventricle and the 4th would be the pulmonary artery.

Medicine's answer above is the wrong explanation for why the answer is D.

The pulmonary vein is the 4th structure IN THIS LIST that is encountered by a red cell.
You're right that the 4th would be the pulmonary artery -
if the right ventricle were included here.

But the question does not make clear that the only structures to be considered are those in this list!

Yes, the correct answer here would be D because...

1. The deoxygenated blood from the lower half of the body (where the kidneys are located) to the heart through the inferior vena cava.

2. The inferior vena cava leads directly into the right atrium.

3. After going through the right atrium and right ventricle, the blood is sent to the lungs through the pulmonary artey to become oxygenized.

4. The oxygenated blood returns to the heart (left atrium) through the pulmonary vein.

5. Finally, it would end up in the left ventricle to be sent out to the body once again.


So,

1. Inferior vena cava
2. Right atrium
3. Pulmonary artery
4. Pulmonary vein
5. Left ventricle

The general impression about blood vessels is that arteries carry blood from heart to various parts of body & veins carry blood from different parts of body to heart.
Only in case of Pulmonary there is an exception - as opposite is true. That is pulmonary artery carries pure blood from lungs to heart & Pulmonary vein carries impure blood from heart to lungs for purification.
This is the reason that the answer to the question is D.