This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Bronchopulmonary Segments, Embryonic veins, Subject name: Anatomy
Posterior cardinal vein develops into: 
Select and explain. 
A. Superior vena cava, B. Internal jugular vein, C. External jugular vein, D. Common iliac vein
D: Common iliac vein
Answer: D: Common iliac vein 
Explanation: -Right Posterior cardinal veins contribute to inferior vena cava and common iliac veins. Left anterior and Left posterior cardinal veins regress - Superior vena cava and jugular veins develop from anterior cardinal veins.