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
All of the following are true about vagina except 
Select and explain. 
A. Direction of vagina is parallel to plane of brim of true pelvis., B. Posterior wall is 11.5 cm and anterior wall is 9 cm long, C. Vaginal mucosa is lined by keratinized squamous epithelium, D. No glands open into vagina
C: Vaginal mucosa is lined by keratinized squamous epithelium
Answer: C: Vaginal mucosa is lined by keratinized squamous epithelium 
Explanation: Vaginal mucosa is lined by non-keratinized squamous epithelium.