A 37-year-old adult was diagnosed with dyspepsia with documented H. pylori infection. An appropriate course of antimicrobial and proton pump inhibitor (PPI) therapy was prescribed and completed approximately 4 weeks ago. The patient states that the presenting symptoms have resolved and, “My stomach feels much better.” Which of the following is the most appropriate next step in care?A. Serologic test for H. pylori antibodies should be checked today.B. The patient should be referred to ga...