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': 'Medulla is supplied by all except? \nSelect and explain. \nA. Basilar aery, B. Anterior spinal aery, C. Veebral aery, D. Posterior cerebral aery', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Posterior cerebral aery', 'role': 'assistant'}]