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': 'True about H. pylori is - \nSelect and explain. \nA. Vacuolating cytotoxin, B. Antiurease antibody detection specific for type I, C. Found in the jejunum, D. Treatment is Al(OH)2', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]