This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Hematology, Subject name: Pharmacology
[{'content': 'Megaloblastic anaemia may be caused by all of the following, except \nSelect and explain. \nA. Dilantin toxicity, B. Vitamin B12 deficiency, C. Folic acid deficiency, D. Long term aspirin intake', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Aspirin intake doesn&;t cause megaloblastic anemia. All the others cause megaloblastic anemia. From medical pharmacology padmaja 4th edition Page no 256', 'role': 'assistant'}]