This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrinology, Subject name: Pharmacology
[{'content': 'Drug used for sexual arousal is? \nSelect and explain. \nA. SSRI, B. Beta blocker, C. Alfa 2 antagonist, D. Alfa 1 antagonist', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. (c) Alfa 2 antagonistRef: KDT 6/e, p 119, 12, 135', 'role': 'assistant'}]