A 65-year-old with COPD presents with increased dyspnea, sputum purulence and volume. SpO₂ is 90% on room air; no pneumonia on CXR. Which regimen is most appropriate?APrednisone 40 mg daily for 14 days without antibioticsBInhaled corticosteroid burst for 10 days onlyCNo steroids; start azithromycin for 3 daysDPrednisone 10 mg daily for 10 days; no antibioticsEPrednisone 40 mg daily for 5 days plus antibiotics because of cardinal symptomsCheck my answer