This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Neuroradiology, Subject name: Radiology
[{'content': '"Lemon sign" & "Banana sign" on Antenatal USG is seen in \nSelect and explain. \nA. Down syndrome, B. Chiari Malformation, C. Turner syndrome, D. Klienfelters syndrome', 'role': 'user'}, {'content': 'Answer: B \nExplanation: *The Anterior bossing of frontal bone is called as Lemon sign *Wrapping of cerebellum around brain stem is called as Banana sign *Lemon sign and Banana sign are features of Chiari -II Malformation and also seen with spina bifida.', 'role': 'assistant'}]