A 45-year-old man presents with epigastric pain that improves on eating, and he tests positive for Helicobacter pylori. According to NICE guidelines, what is the recommended first-line eradication regimen in an adult with no penicillin allergy?AProton pump inhibitor (PPI) plus amoxicillin plus clarithromycin for 7 daysBPPI plus metronidazole plus clarithromycin for 14 daysCH2 receptor antagonist plus amoxicillin plus clarithromycin for 7 daysDPPI plus bismuth chelate plus clarithromycin for 7 daysEAntacid alone for symptomatic reliefCheck my answer