This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrinology, Subject name: Medicine
Testoesterone receptor antagonist is - 
Select and explain. 
A. Flutamide, B. Mifipristone, C. Danazol, D. Nonoxynol
A: Flutamide
Answer: A: Flutamide 
Explanation: Ref - semantischolar.org