This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endometriosis, Adenomyosis, Subject name: Gynaecology & Obstetrics
[{'content': 'Prevalence of endometriosis in women with unexplained infeility is:- \nSelect and explain. \nA. 10 - 20 %, B. 20 - 30 %, C. 30 - 40 %, D. 40 - 50 %', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Endometriosis is found predominantly in women of reproductive age.The prevalence of the condition is assumed to be around 10% In women with pelvic pain or infeility, a high prevalence of endometriosis (from a low of 20% to a high of 90%) is repoed. In women with unexplained subfeility with or without pain (regular cycle, paner with normal sperm), the prevalence of endometriosis is repoed to be as high as 50%.', 'role': 'assistant'}]