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': 'Incidence of infeility isin reproductive age couples ? \nSelect and explain. \nA. 0-5 %, B. 5-10%, C. 10-20 %, D. 25-30%', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans: C. 10-20 %Infeility is defined as the failure to conceive after one year of regular unprotected intercourse.Incidence10-20% of reproductive ages couples.', 'role': 'assistant'}]