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: Gynaecology & Obstetrics
[{'content': '32 year old male presents at Infertility clinic with history of azoospermia on semen analysis. His serum FSH is increased and testosterone levels are decreased. Where is site of block in this case? \nSelect and explain. \nA. Testicular, B. Post-testicular, C. Hypothalamus, D. Pituitary', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Site of Block\n\n\nHormones\n\n\n\n\n\n\n\nTesticular\nPost-testicular\nHypothalamus\nPituitary\n\n\nFSH↑. Testosterone\xa0↓\n\t\t\tFSH normal, Testosterone Normal\n\t\t\tFSH↓, Testosterone↓\n\t\t\tFSH↓, Testosterone↓', 'role': 'assistant'}]