<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:An 81-year-old woman comes to the emergency department due to a left-sided paralysis for the past 2 hours. Her husband says her symptoms began suddenly, and she is also unable to speak. Her pulse is 90min, respirations are 18min, temperature is 36.8C 98.2F, and blood pressure is 15098 mm Hg. An ECG is obtained and is shown below. Which of the following is the most probable cause of the patients paralysis?? A: Cardioembolic stroke, B: Cocaine toxicity, C: Conversion disorder, D: Hemorrhagic disorder, E: Rupture of berry aneurysm,  <response>: This is a clinical case of an elderly woman presenting with acute onset left-sided paralysis and inability to speak, along with vital signs showing hypertension. The ECG shows atrial fibrillation. This presentation is most consistent with an acute ischemic stroke, likely due to a cardioembolic source given the atrial fibrillation. The other options can be ruled out based on the acute presentation and ECG findings.A: Cardioembolic stroke 