This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General obstetrics, Subject name: Anatomy
[{'content': 'Time taken for spermatogenesis is: \nSelect and explain. \nA. 50-60 days, B. 60-70 days, C. 70-80 days, D. 80-90 days', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Spermtogenesis takes on average of 70-80 days (75 days) .', 'role': 'assistant'}]