This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nervous System, Subject name: Physiology
Which of the following vascular occlusion is the most common cause of hemiplegia? 
Select and explain. 
A. Basilar artery, B. Vertebral artery, C. Anterior cerebral artery, D. Middle cerebral artery
D: Middle cerebral artery
Answer: D: Middle cerebral artery 
Explanation: Ans. D Middle cerebral arteryRef: Harrison's, 1 7th ed. Chapter 23* The Middle cerebral artery is by far the largest cerebral artery and is the vessel most commonly affected by cerebrovascular accident (CVA) as it is the direct continuation of the internal carotid artery.* The MCA supplies most of the outer convex brain surface, nearly all the basal ganglia, and the posterior and anterior internal capsules. Hence it is most commonly affected and its occlusion most commonly leads to hemiplegia.