This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Disorders of menstruation, Subject name: Gynaecology & Obstetrics
[{'content': 'Most common cause of menorrhagia in chilbearing period: \nSelect and explain. \nA. Fibroid, B. Dysfunctional uterine bleeding, C. Pelvic endometriosis, D. Adenomyosis', 'role': 'user'}, {'content': "Answer: B \nExplanation: About 10-15% women experiences episodes ofDUB in the reproductive years of their life.It is common during extremes of reproductive life following pregnancy,during lactation. The endometral abnormalities may be primary or secondary to incoordination in the hypothalamo-pituatary ovarian axis. It is thus more prevalent in extremes of reproductive period. DUB is more prvalent in extremes of Reproductive period. In childbearibg period ,MC cause of menorrhagia is DUB. SHAW' S TEXTBOOK OF GYNAECOLOGY,Pg no:301,15th edition and DC Dutta' s ,page no.154, 7th edition.", 'role': 'assistant'}]