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 poal vein ? 
Select and explain. 
A. Pancreas, B. Gall bladder, C. Inf. vena cava, D. CBD
B: Gall bladder
Answer: B: Gall bladder 
Explanation: Ans. is 'b' i.e., Gall bladder Impoant relations about poal vein Infraduodenal pa i) Anterior :- Neck of pancreas ii) Posterior :- IVC Retroduodenal pa i) Anterior :- Istpa of duodenum, bile duct, gastroduodenal aery ii) Posterior :- IVC Supraduodenal pa i) Anterior :- Hepatic aery, bile duct ii) Posterior :- IVC, separated by epiploic formen