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
Incidence of infeility isin reproductive age couples ? 
Select and explain. 
A. 0-5 %, B. 5-10%, C. 10-20 %, D. 25-30%
C: 10-20 %
Answer: C: 10-20 % 
Explanation: 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.