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': 'The enzyme 5α reductase mediated conversion of testosterone to dihydrotestosterone is NOT required for which of the following actions? \nSelect and explain. \nA. Formation of male external genitalia in the fetus, B. Prostatic hypertrophy in elderly males, C. Pubertal changes in the male adolescent, D. Spermatogenesis', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]