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': 'Gonococcus can infect all except \nSelect and explain. \nA. Cervix, B. Vagina, C. Bartholin gland, D. Fallopian tube', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Gonococci is gram negative cocco bacillus that invades columnar and transitional epithelial cells, becoming intracellular. Vaginal epithelium, which is squamous cell is not involved.', 'role': 'assistant'}]