This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T, Subject name: Medicine
[{'content': 'Most sensitive test for H pylori is- \nSelect and explain. \nA. Fecal antigen test, B. Biopsy urease test, C. Serological test, D. Urea breath test', 'role': 'user'}, {'content': 'Answer: B \nExplanation: <P>Davidson&;s principles and practice of medicine 22nd edition. *biopsbiopsy unease test is cheap,quick ,specific(95%) and sensitivity (85%)</p>', 'role': 'assistant'}]