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: Surgery
[{'content': 'A dome shaped skull with a high forehead in the infant with slight hydrocephalus (Olympian brow) is seen in - \nSelect and explain. \nA. Marasmus, B. Congenital syphilis, C. Rickets, D. Arnold chiari syndrome', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]