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
Which hormone levels are increased in prader Willi syndrome 
Select and explain. 
A. TSH, B. GH relin, C. Growth hormone, D. Peptide YY
B: GH relin
Answer: B: GH relin 
Explanation: GH relin levels are increased in Prader willi syndrome.