This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Blood, Subject name: Medicine
[{'content': 'A 57-year-old man, with a history of chronic alcohol ingestion, is admitted to the hospital with acute alcoholic intoxication and lobar pneumonia. Physical examination reveals pallor; a large, tender liver; and consolidation of the right lower lobe. Laboratory data include hemoglobin of 7 g/dL, WBC of 4000/mL, and platelet count of 85,000/mL. Which of the following is the most likely factor for the anemia? \nSelect and explain. \nA. hemolysis, B. hemobilia, C. vitamin B12 deficiency, D. toxic marrow suppression', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Anemia is usually multifactorial in alcoholics and includes marrow suppression, GI bleeding, hemorrhagic diathesis, and nutritional deficiency.', 'role': 'assistant'}]