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: Gynaecology & Obstetrics
[{'content': 'Stimulation of α - adrenergic receptors in bladder results in \nSelect and explain. \nA. Voiding of urine, B. Urine storage, C. Urethral relaxation, D. Detrusor relaxation', 'role': 'user'}, {'content': 'Answer: B \nExplanation: α - adrenergic receptors stimulation results in urethral contraction and aids in urine storage and continence.', 'role': 'assistant'}]