A 42-year-old man presents with epigastric pain that improves with eating and returns a few hours later. He has tested positive for Helicobacter pylori. According to UK guidelines, what is the first-line treatment strategy for H. pylori eradication?AHigh-dose proton pump inhibitor (PPI) alone for 4 weeksBPPI plus clarithromycin for 14 daysCPPI plus amoxicillin plus clarithromycin for 7 daysDBismuth-based quadruple therapy for 7 daysEPPI plus metronidazole for 4 weeksCheck my answer