This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Physiology
[{'content': 'Relaxation of Detrusor occurs which receptors? \nSelect and explain. \nA. b-1 sympathetic, B. b-2 sympathetic, C. a-1 sympathetic, D. a-2 sympathetic', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., b-2 sympatheticRelaxation of detrusor is through beta-2 receptors.", 'role': 'assistant'}]