This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Brain Hemorrhage, Subject name: Medicine
The most common site of cerebral infarction is in the territory of: 
Select and explain. 
A. Anterior cerebral aery, B. Middle cerebral aery, C. Posterior cerebral aery, D. Posterior inferior cerebellar aery
B: Middle cerebral aery
Answer: B: Middle cerebral aery 
Explanation: MCA is the largest cerebral aery and is the vessel most commonly affected by the CVA. It supplies most of the outer convex brain surface, nearly all the basal ganglia and the posterior and anterior internal capsules.