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
[{'content': 'Iron is absorbed in: March 2012 \nSelect and explain. \nA. Stomach, B. Duodenum, C. Ileum, D. Duodenum + Jejunum', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans: B i.e. DuodenumSite of absorptionStomach is the site of absorption of water and alcoholDuodenum is the site of absorption of iron and calciumIleum is the site of absorption of vitamin B12 and bile salt', 'role': 'assistant'}]