This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Sympathetic System, Subject name: Pharmacology
[{'content': 'Mirabegron is a: \nSelect and explain. \nA. Beta 3 agonist, B. Beta 3 antagonist, C. Beta 1 agonist, D. Beta 1 antagonist', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Mirabegron is a beta 3 agonist. It is indicated in overactive bladder because Beta 3 receptor stimulation relaxes the bladder. Beta 3 receptor are also present on adipose tissue and cause lipolysis. So, beta 3 agonist can be used as anti-obesity drugs but are not approved yet.', 'role': 'assistant'}]