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': 'In a new born, vagina is lined by - epithelium : \nSelect and explain. \nA. Squamous, B. Transitional, C. Columnar, D. Stratified', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Transitional', 'role': 'assistant'}]