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
[{'content': 'GnRH analogue used in hormonal treatment of carcinoma prostate is? \nSelect and explain. \nA. Goserelin, B. Nilutamide, C. Cyproterone acetate, D. Finasteride', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]