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': 'Human papilloma virus (HPV) serotype most often associated with invasive carcinoma cervix is: \nSelect and explain. \nA. HPV - 11, B. HPV - 16, C. HPV - 18, D. HPV - 31', 'role': 'user'}, {'content': 'Answer: B \nExplanation: HPV - 16', 'role': 'assistant'}]