This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Peptic Ulcer Disease, Subject name: Medicine
[{'content': 'Best test for determining eradication of H.Pylori infection: \nSelect and explain. \nA. Urease test, B. Breath urea test, C. Tissue biopsy, D. Serum ELISA', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Tests Commonly Used to Detect Helicobacter pylori. Invasive (Based on Endoscopic Biopsy) Non-invasive 1. Biopsy urease: Quick, simple 2.Histology 3.Culture: Permits determination of antibiotic susceptibility. 1. Serology: Inexpensive and convenient; Cannot be used for early follow-up after treatment 2. 13-C urea breath test. Inexpensive and simpler than endoscopy; useful for follow-up after treatment 3. Stool antigen test: Inexpensive and convenient; Useful for screening', 'role': 'assistant'}]