Problem: A 62-year-old man presents with general malaise, occasional cough, and weight loss of 10 lbs (4.5 kg) over the last two months. History is significant for prediabetes managed with diet and cigarette smoking. Physical examination findings include mild edema in the extremities and clubbing bilaterally. Blood work shows mild anemia and sodium of 122 mg/dL. What test should be done next? Looking for Assignment Help? A. Bronchoscope B. Chest MRI C. Chest radiograph D. CT chest