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': 'DOC for infantile spasms \nSelect and explain. \nA. ACTH, B. Phenytoin, C. Phenobarbitone, D. Carbamazepine', 'role': 'user'}, {'content': 'Answer: A \nExplanation: ACTH is the drug of choice for infantile spasms and vigabatrin is DOC for infantile spasms with tuberous sclerosis. Ref: KD Tripathi 8th ed.', 'role': 'assistant'}]