Which of the following are approved initial treatment regimens for the eradication of H. pylori? Select all that apply

Which of the following are approved initial treatment regimens for the eradication of H. pylori? Select all that apply. A. PPI therapy for an additional 4 weeks for 8 weeks of total therapy B. Standard dose PPI + amoxicillin 1 gram + clarithromycin 500 mg all twice daily for 10 to 14 days C. Standard dose PPI + amoxicillin 1 gram + levofloxacin 500 mg all twice daily for 10 days D. Standard dose PPI + trimethoprim/sulfamethoxazole double strength + erythromycin 500 mg all twice daily for 10 to 14 days E. Standard dose PPI once or twice daily + metronidazole 250 mg, tetracycline 500 mg, + bismuth subsalicylate 525 mg each four times daily for 10 to 14 day