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': 'Which of the following is absorbed in the proximal intestine- \nSelect and explain. \nA. Iron, B. Electrolytes, C. Bile salts, D. Vitamin B12', 'role': 'user'}, {'content': 'Answer: A \nExplanation: A i.e. Iron', 'role': 'assistant'}]