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': 'Male factor is responsible for infeility in how much percentage - \nSelect and explain. \nA. 5%, B. 20%, C. 30%, D. 50%', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is'c'i.e., 30% Infeility: Male factor: 30%Tubal, uterine & peritoneal factor: 25%Ovarian factor: 25%Cervical factor: 10%Unexplained factor: 10%", 'role': 'assistant'}]