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
[{'content': 'Obesity with mental retardation is seen in ? \nSelect and explain. \nA. Prader-Willi syndrome, B. Turner syndrome, C. Fragile-X syndrome, D. Noonan syndrome', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Prader-Willi syndrome Prader-Willi syndrome is characterized by : Mental retardation Sho stature Hypotonia Obesity Hyperphagia Small hands and feet Hypogonadism.", 'role': 'assistant'}]