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: Medicine
Obesity in children is seen in: 
Select and explain. 
A. Prader willi syndrome, B. Adrenal insufficiency, C. Pseudo-hypo-parathyroidism, D. Soto syndrome
A: Prader willi syndrome
Answer: A: Prader willi syndrome 
Explanation: None