This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Microbiology
[{'content': 'Non invasive test for H.pylori -a) Rapid urease testb) Urease breath testc) Stool antigen assayd) Stomach aspiration culturee) Biopsy \nSelect and explain. \nA. a, B. c, C. bc, D. ad', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]