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: Pharmacology
Which of the following drugs is not used in prostate carcinoma ? 
Select and explain. 
A. Finasteride, B. Diethylstilbesterol, C. Testosterone, D. Flutamide
C: Testosterone
Answer: C: Testosterone 
Explanation: None