A 36-year-old man presents with heartburn and acid regurgitation several times per week, worse at night. He has recently developed dysphagia and unintentional weight loss of 5 kg over 2 months. What is the most appropriate next step in management?AStart a proton pump inhibitor and review in 4 weeksBArrange urgent upper GI endoscopy under 2-week wait pathwayCOffer H. pylori testing and treat if positiveDGive Gaviscon and lifestyle advice onlyERefer for routine surgical opinion for fundoplicationCheck my answer