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
All of these supply the first 2 cm of the duodenum EXCEPT: 
Select and explain. 
A. Supraduodenal aery, B. Common heaptic aery, C. Gastroduodenal aery, D. Superior pancreaticoduodenal aery
A: Supraduodenal aery
Answer: A: Supraduodenal aery 
Explanation: A i.e. Supraduodenal aery