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': 'Carcinoma cervix is caused by : \nSelect and explain. \nA. Herpes simplex type I, B. Papova virus, C. Ebstein virus, D. Adeno virus', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Papova virus', 'role': 'assistant'}]