<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 75-year-old woman is being treated for atrial fibrillation. She presents to the clinic with complaints of nausea, vomiting, photophobia, and yellow-green vision with yellow halos around the lights. She has a heart rate of 64min, blood pressure is 11876 mm Hg, and respiratory rate is 15min. Physical examination reveals regular heart sounds with clear lung sounds bilaterally. Liver function tests are normal. Toxicity of which of the following anti-arrhythmic drugs would best fit this clinical picture?? A: Digoxin, B: Amiodarone, C: Propafenone, D: Sotalol, E: Atenolol,  <response>: This is a clinical vignette describing a patient with symptoms of nausea, vomiting, photophobia, and yellow-green vision with yellow halos around lights. She has a history of atrial fibrillation and is on anti-arrhythmic medication. The question is asking which anti-arrhythmic medication would cause the described toxicity symptoms.The key findings are:- Atrial fibrillation - Nausea, vomiting, photophobia, yellow-green vision with halos - Normal vital signs and physical exam except for the vision changes- Normal liver function testsThis clinical picture is most consistent with digoxin toxicity which can cause gastrointestinal symptoms like nauseavomiting as well as visual changes like photophobia, color vision changes, and halos around lights. The other anti-arrhythmic options would not cause this constellation of toxicity symptoms.A: Digoxin 