This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endometriosis and Infertility, Subject name: Gynaecology & Obstetrics
[{'content': 'Most common siteof endometeriosis - \nSelect and explain. \nA. Ovary, B. Fallopian tube, C. LSCS scar, D. Colon', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Ovary", 'role': 'assistant'}]