This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Brain , Subject name: Anatomy
[{'content': 'Medulla oblongata arises from \nSelect and explain. \nA. Prosencephalon, B. Rhombencephalon, C. Mesencephalon, D. None', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Rhombencephalon- pons, cerebellum, medulla 4th ventricleMesencephalon- midbrain, cerebral aqueductProsencephalon - cerebral hemispheres, Diencephalon, lateral and 3rd ventricle.(Ref: Vishram Singh textbook of clinical neuroanatomy second edition pg 4)', 'role': 'assistant'}]