This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Stomach & Duodenum, Subject name: Surgery
The vessel which needs to be ligated in a patient with a bleeding peptic ulcer is: 
Select and explain. 
A. Gastroduodenal aery, B. Superior pancreaticoduodenal aery, C. Left gastric aery, D. Left gastroepiploic aery
A: Gastroduodenal aery
Answer: A: Gastroduodenal aery 
Explanation: The vessel which needs to be ligated in a patient with a bleeding peptic ulcer is gastroduodenal aery. Anteriorly placed ulcers tend to perforate posterior duodenal ulcers tend to bleed by eroding into the gastroduodenal aery."