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: Pathology
Intrauterine exposure of diethylstiboesterol is associated with - 
Select and explain. 
A. Squamous cell carcinoma of cervix, B. Adenocarcinoma of endometrium, C. Clear cell adenocarcinoma of vagina, D. Sarcoma of uterus
C: Clear cell adenocarcinoma of vagina
Answer: C: Clear cell adenocarcinoma of vagina 
Explanation: Ans. is 'c' i.e., Clear cell adenocarcinoma of vagina