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: Surgery
Artery to bleed in duodenal ulcer haemorrhage - 
Select and explain. 
A. Splenic artery, B. Gastroduodenal artery, C. Left gastric artery, D. Sup. mesenteric artery
B: Gastroduodenal artery
Answer: B: Gastroduodenal artery 
Explanation: Gastro duodenal artery is the most common artery involved in duodenal ulcer hemorrhage.

Also, remember

A peptic ulcer is the most common cause of massive upper gastrointestinal bleed (Duodenal ulcers > Gastric ulcers)
Bleeding ulcers in the duodenum are usually located on the posterior surface of the duodenal bulb.