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': 'The drug of choice in treatment of infantile spasms is: \nSelect and explain. \nA. ACTH, B. Phenobarbitone, C. Carbamazepine, D. Phenytoin', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Coicosteroids afford symptomatic relief. Valproate and clonazepam have adjuvant value. Vigabatrin has some efficacy Refr: KD Tripatih 8th ed.', 'role': 'assistant'}]