A 40-year-old woman with dyspepsia tests positive for Helicobacter pylori on a urea breath test. She has no alarm symptoms. According to UK guidance, what is the most appropriate first-line eradication regimen?AProton pump inhibitor plus amoxicillin plus clarithromycin for 7 daysBProton pump inhibitor monotherapy for 4 weeksCProton pump inhibitor plus metronidazole plus levofloxacin for 14 daysDH2 receptor antagonist plus amoxicillin plus clarithromycin for 7 daysEAmoxicillin monotherapy for 7 daysCheck my answer