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: Gynaecology & Obstetrics
Hypothalamic amenorrhea is seen in: 
Select and explain. 
A. Asherman syndrome, B. Stein-leventhal syndrome, C. Kallman syndrome, D. Sheehan's syndrome
C: Kallman syndrome
Answer: C: Kallman syndrome 
Explanation: None