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': '. Dysfunctional uterine bleeding is commonly met in all except: \nSelect and explain. \nA. Adolescence, B. Following childbirth, C. Premenopausal period, D. Postmenopausal period', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]