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: Physiology
[{'content': 'Hormones, which stimulate spermatogenesis, are: \nSelect and explain. \nA. Insulin and glucagon, B. Thyroxine and parathormone, C. A.D.H. and Oxytocin, D. Testosterone and F.S.H', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]