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': 'Superantigens area) Erythrotoxin of Staph. aureusb) Clostridium difficile toxinc) Staphyloccocal toxic shock syndrome toxind) Cholera toxin \nSelect and explain. \nA. a, B. bc, C. ad, D. ac', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]