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: Medicine
[{'content': 'Complications of shigella infections - a) HUS  b) Reactive arthritis  c) Sepsis   d) None \nSelect and explain. \nA. abc, B. ab, C. bc, D. ac', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]