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
Following are the common histological types of baholingland carcinoma except? 
Select and explain. 
A. Adenocarcinoma, B. Squamous cell carcinoma, C. Adenosquamous carcinoma, D. Transitional cell carcinoma
D: Transitional cell carcinoma
Answer: D: Transitional cell carcinoma 
Explanation: Ans. is 'd' i.e., Transitional cell carcinomaHistological type% of total baholin gland carcinomasAdenocarcinoma40Squamous cell carcinoma40Adenocystic carcinoma15Adenosquamous carcinoma5Transitional cell carcinomarareSmall cell carcinomarare