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
The following statements are related to clear cell carcinoma of the vagina except: 
Select and explain. 
A. Common to those whose mothers were given diethylstilbestrol during early pregnancy, B. Vaginal adenosis may progress to this conditions, C. The middle one-third is the commonest site, D. May be multicentric and may involve even the cervix as well
C: The middle one-third is the commonest site
Answer: C: The middle one-third is the commonest site 
Explanation: None