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: Surgery
Which is not used in carcinoma prostate ? 
Select and explain. 
A. Estrogen, B. Progesterone, C. Cyproterone acetate, D. Flutamide
C: Cyproterone acetate
Answer: C: Cyproterone acetate 
Explanation: Ans. is 'c' i.e., Conservative treatment