<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 59-year-old man is brought to the emergency department by his wife for a 1-hour history of sudden behavior changes. They were having lunch together when, at 1:07 PM, he suddenly dropped his sandwich on the floor. Since then, he has been unable to use his right arm. She also reports that he is slurring his speech and dragging his right foot when he walks. Nothing like this has ever happened before. The vital signs include: pulse 95min, blood pressure 16090 mm Hg, and respiratory rate 14min. The physical exam is notable for an irregularly irregular rhythm on cardiac auscultation. On neurological exam, he has a facial droop on the right half of his face but is able to elevate his eyebrows symmetrically. He has 05 strength in his right arm, 25 strength in his right leg, and reports numbness throughout the right side of his body. Angiography of the brain will most likely show a lesion in which of the following vessels?? A: Internal carotid artery, B: Anterior cerebral artery, C: Middle cerebral artery, D: Posterior cerebral artery, E: Basilar artery,  <response>: This is a clinical vignette describing a 59-year-old man with sudden onset right-sided weakness, slurred speech, and right-sided numbness. The description of the neurological exam findings, including right facial droop, arm weakness, and leg weakness, along with the acute onset, are classic for a stroke. The most likely etiology based on the patients age and cardiac irregular rhythm is an embolic stroke. The area of the brain affected is the left side, causing right-sided deficits. The middle cerebral artery supplies most of the lateral surface of the brain. Occlusion of the middle cerebral artery would cause symptoms like this patient is experiencing.C: Middle cerebral artery 