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 absorption is inhibited by ? \nSelect and explain. \nA. Ascorbic acid, B. Vitamin C, C. Hepcidin, D. All of the above', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Hepcidin", 'role': 'assistant'}]