This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Central Nervous system, Subject name: Pharmacology
[{'content': 'Anaemia produced by phenytoin \nSelect and explain. \nA. Iron deficiency, B. No anaemia, C. Megaloblastic, D. Sickle cell', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Megaloblastic as it causes mild folic acid deficiency. Ref: KD Tripathi 8th ed.,', 'role': 'assistant'}]