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': 'Toxigenicity of tetanus is done on ? \nSelect and explain. \nA. Rabbit, B. Horse, C. Mouse, D. Guinea pig', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]