This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Brainstem lesions and blood supply of CNS, Subject name: Anatomy
[{'content': 'A patient presented with clinical features of ataxia and in-coordination. It is most likely due to involvement of which aery among the following \nSelect and explain. \nA. Anterior cerebral, B. Posterior cerebral, C. Middle cerebral, D. Superior cerebellar', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Clinical features of ataxia and in-coordination belong to cerebellar pathology, which might arise if there was involvementof superior cerebellar aery. Cerebral aery involvement (anterior, middle or posterior) does not usually present with cerebellar sign and symptoms.', 'role': 'assistant'}]