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: Anatomy
[{'content': 'Mucous membrane of vagina is lined by: \nSelect and explain. \nA. Nonkeratinized Stratified Squamous epithelium, B. Keratinized Stratified Squamous epithelium, C. Columnar cells, D. Cuboidal epithelium', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. A: Nonkeratinized Stratified Squamous epithelium', 'role': 'assistant'}]