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
Time taken for spermatogenesis is: 
Select and explain. 
A. 50-60 days, B. 60-70 days, C. 70-80 days, D. 80-90 days
C: 70-80 days
Answer: C: 70-80 days 
Explanation: Spermtogenesis takes on average of 70-80 days (75 days) .