This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Urology, Subject name: Surgery
[{'content': 'Which of the following drugs is useful for treatment of advanced prostate cancer? \nSelect and explain. \nA. Ganirelix, B. Cetrorelix, C. Abarelix, D. Goserelin', 'role': 'user'}, {'content': "Answer: D \nExplanation: Drugs used in advanced prostate cancer are : *LHRH agonists ( medical castration ) - leuprolide, goserelin *Phosphorylated diethylstilbestrol *Androgen receptor blocking agents like flutamide, bicalutamide *Cyproterone acetate (also has progestogenic effect ) Ganirelix, cetrorelix and abarelix are GnRH antagonists Reference : page 1050 SRB's manual of surgery 5th edition", 'role': 'assistant'}]