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': 'Appendicitis like syndrome is caused by: \nSelect and explain. \nA. Y.pseudotuberculosis, B. Pasteurella multocida, C. Bacillus cereus, D. Y.pestis', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Yersinia pseudotuberculosis causes mesentric adenitis leading to Pseudoappendicitis.', 'role': 'assistant'}]