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: Anatomy
[{'content': 'Arrangement of cerebellar grey matter is called ? \nSelect and explain. \nA. Folium, B. Arbor vitae, C. Declive, D. Culmen', 'role': 'user'}, {'content': 'Answer: B \nExplanation: The gray matter of cerebellum is highly folded to accommodate millions of neurons in a small area.This arrangement is called arbor vitae (vital tree of life).', 'role': 'assistant'}]