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': 'Which of the following statement regarding shigella dysentriae type I is true - \nSelect and explain. \nA. It can lead to haemolytic uremic syndrome, B. It produces an invasive enterotoxin, C. It is an facultative aerobe, D. It is MR negative', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]