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
Posterior relation of neck of pancreas ? 
Select and explain. 
A. IVC, B. Origin of postal vein, C. Aoa, D. Common bile duct
B: Origin of postal vein
Answer: B: Origin of postal vein 
Explanation: Ans. is 'b' i.e., Origin of poal vein