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
The renal veins are derived from which of the following? 
Select and explain. 
A. Vitelline veins, B. Umbilical veins, C. Anterior cardinal veins, D. Subcardinal veins
D: Subcardinal veins
Answer: D: Subcardinal veins 
Explanation: Subcardinal veins forms :- poion of IVC Renal veins Gonadal veins