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: Pathology
Genomic imprinting is seen in- 
Select and explain. 
A. Prader willi syndrome, B. Marfan syndrome, C. EDS, D. Osteogenesis imperfecta
A: Prader willi syndrome
Answer: A: Prader willi syndrome 
Explanation: Ans. is 'a' i.e., Prader willi syndrome