This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endometriosis, Subject name: Gynaecology & Obstetrics
[{'content': 'M/c site for extrapelvic endometriosis is: \nSelect and explain. \nA. Broad ligament, B. Sigmoid colon, C. Rectum, D. Ovary', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. is b, i.e. Sigmoid colonM/C site for extrapelvic endometriosis = GITIn GIT M/C site is = sigmoid colon > RectumOverall M/C site of endometriosis = OvaryRarest site of endometriosis = CNS', 'role': 'assistant'}]