A 70-year-old man with COPD presents with increased dyspnoea, purulent sputum and raised CRP. He has no pneumonia on CXR. Which antibiotic strategy is recommended for an acute exacerbation in primary care?ADoxycycline 100 mg twice daily for 5 days (if purulent sputum)BCo-amoxiclav 625 mg TDS for 14 days empiricallyCTrimethoprim 200 mg twice daily for 3 daysDClarithromycin 500 mg once daily for 3 daysENo antibiotics even if sputum is purulentCheck my answer