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: Physiology
Iron absorption takes place in which pa of intestine? 
Select and explain. 
A. Duodenum, B. Ileum, C. Jejunum, D. Colon
A: Duodenum
Answer: A: Duodenum 
Explanation: Ans. is 'a' i.e., DuodenumAlmost all iron absorption occurs in the duodenum.