This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.N.S, Subject name: Pharmacology
[{'content': 'Sumatriptan exerts antimigraine action through which receptors? \nSelect and explain. \nA. 5HT1D/1B, B. 5 HT2, C. 5HT3, D. 5HT4', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., 5HT ID/IB * Sumatriptan is the first selective 5-HT1D/1B receptor agonist; activates other subtypes of 5-HT1 receptors only at very high concentrations, and does not interact with 5-HT2, 5-HT3, 5-HT4-7, a or b adrenergic, dopaminergic, cholinergic or GABA receptors.", 'role': 'assistant'}]