This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Paediatrics, Subject name: Pediatrics
[{'content': "Which of the following is not a cause of microcephaly? \nSelect and explain. \nA. Angelman syndrome, B. Taysach's disease, C. Rett's syndrome, D. Phenyl ketonuria", 'role': 'user'}, {'content': "Answer: B \nExplanation: Primary causes of microcephaly in children are - Mnemonic - Cannot See PEFR in Children Cri-du-chat Syndrome Smith Lemli Optiz Syndrome Patau syndrome Edward syndrome Familial Rubinstein Taybi syndrome Cornelia de Lange syndrome Also Know Acquired MIcrocephaly Q R - Rett's syndrome A - Angelmann Syndrome S - Seckel syndrome Also know some impoant causes of macrocephaly * Taysach's * MPS * Ganghosidosis * Sotos - Fragile x syndrome - Alexander disease - Canavan disease - Neuro cutaneous syndromes", 'role': 'assistant'}]