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 for tetanus are all, except: \nSelect and explain. \nA. Due to exotoxin, B. Due to endotoxin, C. Both of the above, D. None of the above', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Due to exotoxin', 'role': 'assistant'}]