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': 'Risk factors for stress urinary incontinence are all except \nSelect and explain. \nA. Smoking, B. Obesity, C. Hypertension, D. Pregnancy', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Hypertension is not a risk factor for stress urinary incontinence.', 'role': 'assistant'}]