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
ck 7 negative and ck 20 negative tumor is 
Select and explain. 
A. Prostate carcinoma, B. Carcinoma colon, C. Urothelial carcinoma, D. Mesothelioma
A: Prostate carcinoma
Answer: A: Prostate carcinoma 
Explanation: Answer- A. Prostate carcinomaCK7- 1 CK20 - carcinoma of adrenal coex, prostate