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
Testosterone inhibitor is- 
Select and explain. 
A. Spironolactone, B. Clomiphene, C. Bremelanotide, D. Sildenafil
A: Spironolactone
Answer: A: Spironolactone 
Explanation: Ans. is 'a' i.e., Spironolactone