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
Normal FSH level in adult male ? 
Select and explain. 
A. 10-20 IU/L, B. 20-40 IU/L, C. 40-60 IU/L, D. 60-80 IU/L
A: 10-20 IU/L
Answer: A: 10-20 IU/L 
Explanation: Ans. is 'a' i.e., 10-20 IU/L