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
All except one leads to delayed puberty 
Select and explain. 
A. Kallman syndrome, B. McCune-Albright syndrome, C. Turners syndrome, D. Addison disease
B: McCune-Albright syndrome
Answer: B: McCune-Albright syndrome 
Explanation: Mc Cune - Albright syndrome is characterised by precocious puberty.