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: Pediatrics
[{'content': 'Which of the following is seen in Angelman Syndrome \nSelect and explain. \nA. Uniparental disomy of maternal Chromosome, B. Obesity, C. Defective genomic imprinting of maternal chromosome, D. All of the above', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Angelman Syndrome\n\nUniparental disomy of Paternal Chromosome\nDefective imprinting of maternal Chromosome\n\nClinical features\nMental retardation\nHappy puppets.', 'role': 'assistant'}]