This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Digestion and Absorption, Subject name: Physiology
[{'content': 'Iron is actively absorbed in : \nSelect and explain. \nA. Stomach, B. Duodenum and proximal jejunum, C. Large intestine, D. Ileum', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. is \'b\' i.e. Duodenum and proximal jejunum Harrison writes - "Iron absorption takes place largely in the proximal small intestine ".Ganong writes - "Almost all iron absorption occurs in the duodenum".Robbins writes - "Most iron is absorbed in the duodenumGhai writes - "Iron is absorbed from the duodenum and upper jejunum ".', 'role': 'assistant'}]