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: Biochemistry
[{'content': 'The absorption of Inorganic Iron is enhanced by all except: \nSelect and explain. \nA. Alcohol, B. Vitamin C, C. Calcium, D. Fructose', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Inorganic iron is absorbed in the Fe 2+ (reduced) state, and hence, the presence of reducing agents\xa0 enhances absorption.\xa0\nThe most eﬀective compound is vitamin C, and while intakes of 40 to 80 mg of\xa0 vitamin C per day are more than adequate to meet requirements, an intake of 25 to 50 mg per meal\xa0 enhances iron absorption, especially when iron salts are used to treat iron deﬁciency anemia.\xa0\nAlcohol\xa0 and fructose also enhance iron absorption. Heme iron from meat is absorbed separately and is\xa0 considerably more available than inorganic iron.\n\nKey Concept:\nThe absorption of both inorganic and\xa0 heme iron is impaired by calcium—a glass of milk with a meal signiﬁcantly reduces iron availability.\nHARPERS ILLUSTRATED BIOCHEMISTRY30th ed .page no.541', 'role': 'assistant'}]