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': 'Cause(s) of retention of urine in reproductive age group:a) Cervical fibroidb) Retroverted gravid uterusc) Unilateral hydronephrosisd) Severe UTIe) Posterior urethral valve \nSelect and explain. \nA. acd, B. bcd, C. abc, D. abd', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Important gynecological causes of acute retention:—', 'role': 'assistant'}]