<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 71 year-old female is brought to the emergency room by her husband. The husband reports that they were taking a walk together one hour ago, when his wife experienced sudden, right arm and leg weakness. He noticed that she had slurred speech, and that she was not able to tell him where she was. The patient underwent an emergent CT scan, which was unremarkable, and was treated with tissue plasminogen activator tPA. Which of the following EKG findings increases a patients risk for this acute presentation?? A: Supraventricular tachycardia, B: Atrial bigeminy, C: Normal sinus rhythm, D: Prolonged QT, E: Atrial fibrillation,  <response>: This is a clinical vignette describing a patient with acute onset right-sided weakness, slurred speech, and disorientation, along with a negative head CT scan. She was treated with tPA, indicating likely acute ischemic stroke. The question asks about EKG findings that increase stroke risk in this patient. Atrial fibrillation is a known risk factor for ischemic stroke, as it can lead to thromboembolism. The other rhythm disturbances listed do not specifically increase stroke risk.E: Atrial fibrillation 