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': 'Which of the following is not seen in fetal alcohol syndrome? \nSelect and explain. \nA. Microcephaly, B. Macrocephaly, C. Holoprosencephaly, D. Thinning of corpus callosum', 'role': 'user'}, {'content': "Answer: B \nExplanation: b. Macrocephaly(Ref: Nelson's 20/e p 2813)Microcephaly, Growth retardation, ptosis, absent philtrum, congenital heart disease (ASD), feeding problems, neuroglial heterotopia & disorganization of neurons are features of fetal alcohol syndrome.", 'role': 'assistant'}]