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: Medicine
[{'content': 'A 25 year old man who is an alcoholic,presents with easy fatiguability and moderate pallor for the past six months. His Hb is 5. 2G% and serum iron level is 190 microgram per dl. The treatment of choice for him would be - \nSelect and explain. \nA. Iron, B. Pyridoxine, C. Ascorbic acid, D. Vit B12', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]