This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy
Renal pa of inferior vana cava develops from? 
Select and explain. 
A. Vitelline vein, B. Subcardinal vein, C. Supracardinal vein, D. Common cardinal vein
B: Subcardinal vein
Answer: B: Subcardinal vein 
Explanation: None