This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Surgery
Which of the following vessel is most commonly involved in hemorrhage from duodenal ulcer? 
Select and explain. 
A. SMA, B. IVC, C. Gastroduodenal aery, D. Right Gastroepiploic aery
C: Gastroduodenal aery
Answer: C: Gastroduodenal aery 
Explanation: Bleeding: MC complication, on posterior wall, gastroduodenal aery is most commonly involved