<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 28-year-old African American woman comes to the emergency department with intermittent and progressively worsening dizziness with near-fainting incidents for the last 3 weeks. She denies fever, weight loss, nausea, vomiting, or chest pain. Her medical history is significant for a chronic cough and intermittent skin rashes that spontaneously resolved after a few weeks. She does not smoke tobacco but drinks alcohol socially. The patient lives alone with no pets. Her temperature is 37C 98.6F, blood pressure is 12280 mm Hg, pulse is 43min, and respirations are 12min. On physical examination, cervical lymphadenopathy is noted. No heart murmurs are heard. ECG shows sinus rhythm with 2:1 atrioventricular block and left bundle branch block. Chest X-ray shows prominent hilar lymphadenopathy. Which of the following is the most likely diagnosis?? A: Carotid artery stenosis, B: Cardiac myxoma, C: Non-Hodgkins lymphoma, D: Small cell lung cancer, E: Sarcoidosis,  <response>: This is a clinical case scenario describing a 28-year-old African American woman presenting with intermittent dizziness, near-fainting episodes, chronic cough, and skin rashes over the past few weeks. Key findings on exam include cervical lymphadenopathy, sinus bradycardia with heart block on ECG, and hilar lymphadenopathy on CXR. The differential diagnosis includes:- Carotid artery stenosis: Unlikely given lack of focal neurologic deficits and normal blood pressure.- Cardiac myxoma: Unlikely given lack of constitutional symptoms and normal cardiac exam.- Non-Hodgkins lymphoma: Possible given lymphadenopathy, but less common in young patients and would expect other systemic symptoms.- Small cell lung cancer: Possible lung malignancy given hilar lymphadenopathy on CXR, but SCLC unlikely in a young nonsmoker. - Sarcoidosis: Most likely given constellation of chronic cough, skin rashes, lymphadenopathy, cardiac conduction abnormalities, and hilar lymphadenopathy in a young African American woman. Sarcoidosis commonly presents this way.E: Sarcoidosis 