This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Anatomy
Derivative of vitelline vein? 
Select and explain. 
A. IVC, B. SVC, C. Ligamentum venosum, D. Ligamentum teres
A: IVC
Answer: A: IVC 
Explanation: Ans. is 'a' i.e., IVC