This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Central Nervous System, Subject name: Pediatrics
[{'content': 'All of following are neural tube defects except: \nSelect and explain. \nA. Myelomeningocele, B. Anencephaly, C. Encephalocele, D. Holoprosencephaly', 'role': 'user'}, {'content': "Answer: D \nExplanation: d. Holoprosencephaly(Ref: Nelson's 20/e p 2802-2803, Ghai 8/e p 575-577)Different types of neural tube defects are: Spina bifida occulta, meningocele, encephalocele, myelomeningocele, anencephaly, caudal regression syndrome, dermal sinus, tethered cord, syringomyelia, diastematomyelia and iniencephaly Holoprosencephaly is incomplete separation of the cerebral hemispheres across the midline.", 'role': 'assistant'}]